CN1050100A - Continuous type computing machine during the replacing battery - Google Patents
Continuous type computing machine during the replacing battery Download PDFInfo
- Publication number
- CN1050100A CN1050100A CN 90104408 CN90104408A CN1050100A CN 1050100 A CN1050100 A CN 1050100A CN 90104408 CN90104408 CN 90104408 CN 90104408 A CN90104408 A CN 90104408A CN 1050100 A CN1050100 A CN 1050100A
- Authority
- CN
- China
- Prior art keywords
- battery
- computing machine
- main
- bridge joint
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Power Sources (AREA)
Abstract
In battery powered computing machine, when main battery shifted out replacing, a bridge battery circuit was powered to the computing machine short time.This makes when battery altering, and computing machine is partly connected but located static state and need not dump effective procedure and data to disc or card memory.In case main battery shifts out, after computing machine being transferred to the standby mode that all effective procedures temporarily are stored into RAM, a very for a short time battery that presets or bridge joint battery are powered from trend computing machine RAM.Quick-charging circuit in the computing machine provides the rapid charge of a few minutes to the bridge joint battery when new battery inserts.After rapid charge, can provide a very low trickle charge.
Description
The present invention relates to computing machine, based on other processor of controller, more generally relate to and need uninterrupted power source so that preserve any electric equipment of data and state incessantly.Especially, the present invention relates to battery-powered needs often changes portable, the hand-held of battery or knee face formula (laplop) computing machine or other must be able to keep the logical circuit of work when primary power interrupts.
Many portable computers rely on battery to make power supply.Here employed term " portable " speech comprises that broadly relying on battery maybe can rely on battery is all small-size computers of power supply, comprise the portable computer that those are known, knee face formula computing machine, handheld computer or clamping plate type computing machine are (as submitting simultaneously with the present invention, application number is No, be entitled as those computing machines described in the application of " handheld computer ", this application and the present invention transfer same assignee, here cite as a reference).
Most battery powered portable computers comprise a for example such indicator of LED, and when cell voltage is low when needing charging, it just sends signal and gives the operator.In general, when the low battery voltages signal lamp was triggered, the time that the operator can have an appointment 10 to 15 minutes finished the project that he is working, and computing machine can not shut down during this period.Computing machine must cut out then, takes out and change battery, and when having no chance during this period to finish his project as if the operator, the replacing of battery just may cause damage.Other electric equipment often needs a unbroken power supply no matter whether comprise microprocessor.This comprises the device of portable, battery powered, also comprise usually the equipment by the line of electric force powered operation, traffic light controller for example is even break down at power supply, the paused duration of work of traffic lights itself, its state and timing also should keep operation under low consumpting power.
The invention provides a kind of inserting in the computing machine, " the bridge joint battery " that need not regularly replace, (bridge battery) its permission principal computer battery takes out replacing and needn't shut down computer, and this bridge joint battery can be at short notice to computing machine or the only power supply of the necessary circuitry in computing machine when not having main battery.
This bridge joint battery is preferably between the computing machine on-stream period and links to each other with computing machine all the time.But when main battery existed, although it links to each other with computing machine, this bridge joint battery there is no power consumption basically, because computing machine is taken electric current by main battery.
The bridge joint battery does not take out from computing machine, so it must charge in the original place.Thereby in order to keep charging in all times, this bridge joint battery must charge from main battery.
There are several modes can finish the charging of bridge joint battery, promptly by trickle charge (trickle charging) or rapid charge.In a preferred embodiment of the present invention, used rapid charge, because it is better than independent trickle charge, though separately the trickle charge power demand is little, consumed power constantly.When the electricity of bridge joint battery had been put fully, before main battery need be changed next time, trickle charge can not provide enough charge volumes.Thereby in preferred embodiment of the present invention, comprised a quick-charging circuit to the bridge joint battery charge.When each new main battery inserts computing machine, in this circuit short time (for example 5 minutes) from main battery obtain power with two-forty to the bridge joint battery charge.The time of high speed rapid charge is very short, only continues the bridge joint battery time necessary of fully charging.
In a preferred embodiment, charging circuit is also exported very low trickle charge electric current so that guaranteed that before needing this bridge joint battery once more this battery is charged to full capacity.
Thereby one of purpose of the present invention is the effectiveness that makes computing machine battery powered portable computer of energy continued operation enhancing the during changing battery.The further purpose of the present invention is to utilize a bridge joint battery of inserting computing machine in order to finish this point, when battery altering, though it can be enough to the filtration power of using for computing machine for computing machine provides the duration weak point.In preferred embodiment, when new battery was fit into computing machine, this bridge joint battery was from new quickly charging battery.
Other and further purpose of the present invention will be more clear from the explanation done below in conjunction with accompanying drawing and claim.These accompanying drawings represent preferred embodiment of the present invention and principle thereof in illustrational mode and use these principles, think best mode at present.If those skilled in the art wishes, can use principle same or that be equal to and make other embodiments of the invention and make all changes and conversion, but all these still drops within the scope of spirit of the present invention and claims.
Fig. 1 is the simplified block diagram of groundwork that expression the present invention is used for the bridge battery system of computing machine.
Fig. 2 is that expression is used for the bridge joint quickly charging battery, follows circuit diagram by an example of the bridge joint battery charger of trickle charge.
Fig. 2 A, 2B and 2C are the simple wave form figure of key diagram 2 circuit workings.
Fig. 3 is the computing machine main power circuit figure that comprises the bridge joint battery charger of Fig. 2.
Referring now to accompanying drawing narration embodiments of the invention.
In the accompanying drawings, Fig. 1 is according to of the present invention, makes the simple block diagram of equipment (for example portable computer) system of uninterrupted its work of energy during changing battery.
In Fig. 1,10 expression computing machines, it links master battery pack 12 or external power 14 usually.Master battery pack 12 and external power 14 all may be removed or be lost efficacy.In the time of can not recharging main battery the field, after using certain hour, master battery pack 12 must replace with the electric battery of new charging.
One " bridge " connects battery 22 and is connected on the computing machine as shown in the figure.Little and bridge joint battery 22 that capacity is lower can as directedly link to each other with computing machine always, be used for taking out when changing and power to the computing machine short time (for example a few minutes) when master battery pack 12.This makes computing machine 10 continuous working incessantly.As described below, if wish, the bridge joint battery also can be enough big in case with static mode (quiescent mode) to computer power supply, the time can be more much longer than changing the battery required time.For example, if cell voltage is very low, computing machine places standby mode (standby mode) automatically, then by the bridge joint battery to standby mode long period power supply, can go out to buy new dry-cell or even have the enough time that charging cell group is again charged with time enough to the operator.
Fig. 1 shows the facility that uses the new electric battery of changing 12 or new 14 pairs of bridge joint batteries 22 of external power that connect to charge.When main switch connect (comprising the connection of external power when cell voltage is low) but or if arranged when the main switch connection power supply time spent (shown in frame 18) of having charged, just for example bridge joint battery 22 carried out rapid charge in 3 minutes in short time.This rapid charge of charging control circuit 30 controls.In one embodiment, when main switch was closed, charging control 30 just provided a charging battery, and permission provides the trickle charge of little electric current to bridge joint battery 22 from main battery 12 or external power continuously.
As mentioned above, when changing master battery pack 12, wish to carry out earlier rapid charge and can power when needed to guarantee the bridge joint battery.Like this, shown in Fig. 1 center 18, the replacing of master battery pack 12 means the triggering through the rapid charge of charging control circuit 30.This also can realize by mechanical connection or electric sensor when rechargeable battery set is inserted.
Fig. 1 represents that bridge joint battery 22 only temporarily powers to the RAM24 of computing machine 10.To further specify below, when main battery is about to change when too low (or cell voltage concerning computer operation), all effective procedures and data preferably deposit RAM24 in through artificial or automatic backup circuit breaker 26.
Fig. 2 represents the battery charger 30 of system of the present invention, and Fig. 2 A, 2B and 2C are the figures of explanation circuit 30 work.
From Fig. 2 as seen, closed and whenever main power switch 32 whenever new main battery is inserted in the computing machine 10 or in other device or during the external power power supply, just bridge joint battery 22 carried out rapid charge.
If main power switch 32 disconnects, then main battery is changed and will do not produced any effect, does not take place as long as switch 32 disconnections then have charging (rapid charge or trickle charge).When switch 32 closures, as long as there is power supply to be connected to computing machine, just will begin the charging of bridge joint battery, promptly link computing machine or install 10 DC transducer no matter this power supply is main battery 20 or external power.
If change main battery 20 when main power switch is connected, according to one embodiment of the present of invention, computing machine 10 must at first place " standby " mode.When backup circuit breaker and standby mode are closed at the remainder of computing machine, effective procedure and data are kept in the RAM.Device operator can place standby mode to computing machine with this backup circuit breaker earlier, changes main battery then, makes computing machine change duty over to again by reusing backup circuit breaker then.In a preferred embodiment, whenever main battery take out or the main battery that has not charged can with and external power when removing, computing machine can place standby mode automatically, under any circumstance, whenever computing machine moves and approach to be not enough to keep when showing reservoir and program storage device, preferably trigger standby mode after " low battery " emergency warning lamp is bright.This realizes by sensor and software, to prevent losing of effective procedure and data.This function represents with square 33 at Fig. 1, its expression detected low-voltage battery and to computing machine or backup circuit breaker 26(or both) send a signal, to finish this function by software and/or hardware.During this period, the bridge joint battery can slow down the power consumption of main battery, and perhaps, if the user removes electric battery 12, then the bridge joint battery is used alone.
Change main battery when main power switch 32 closures or when main power switch 32 is connected, then in preferred embodiment of the present invention, circuit 30 will provide about 3 minutes rapid charge to bridge joint battery 22.
Connect computing machine at main power switch 32 places or when main power switch is connected, change main battery, cause in the circuit 30 shown in 34 places, position generation voltage jump (see figure 2), this saltus step is shown schematically among Fig. 2 A.Electric capacity 36 hinders these voltage jumps and in opposite side (38 places among Fig. 2) the corresponding rising of voltage of electric capacity.This is shown in Fig. 2 B.Shown in Fig. 2 B, the voltage of this rising can only continue about 3 minutes short time.The voltage of this rising is 10M Ω by stake resistance 40(resistance among Fig. 2) discharge.
Meanwhile, at charge discharging resisting before certain level (among Fig. 2 42), N channel fet 44 is because high voltage and " conducting " becomes short circuit effectively in circuit 30.
Like this, when 44 conductings of N channel fet, charging current Figure 2 shows that 1000 ohm by resistance 46() bridge joint battery 22 is charged and without the resistance 48 of 2.2K Ω.Charging current is determined by resistance 46 and is to be in the high level of rapid charge or the 25C shown in Fig. 2 C like this.
But shown in Fig. 2 B curve, when the voltage in the circuit 38 dropped to a little 42, transistor 44 ended, and became high impedance and became the switch of disconnection.At this moment, electric current is mainly through for example 1000 ohm of resistance 46() and resistance 48(2.2K Ω for example).This has formed second charging current or be approximately 0.04C shown in Fig. 2 C.This was whenever computing machine or installs 10 trickle charges of connecting and powering consistently to bridge joint battery 22 after the rapid charge short time.
Fig. 2 B represents that the time constant T of rapid charge is determined from the speed of the discharge of circuit 38 by resistance 40.
On high current level, can keep about 3 minutes and resistance 22 is not had the danger (this battery can be composed in series by two 3.6 volts nickel-cadmium battery) of essence the rapid charge of bridge joint battery 22.
In one embodiment of the invention, as shown in Figure 2, input voltage can change to 18 volts from about 11 volts.Minimum voltage takes place when will the main battery 20 in computing machine being low-voltage.18 volts of voltage the highest when external power be that the DC transducer takes place when linking computing machine.
Fig. 3 represents to be used for the main PC plate power circuit of computing machine 10, and bridge battery circuit of the present invention is wherein arranged.
Bridge joint battery charger 30 lower left in Fig. 3.Now the top from the circuit diagram of Fig. 3 begins narration, and direct current input socket 50 is connected to an OR-gate diode D10 through noise filtering circuit 52 and common mode transformer 54.When external power is received in 50, survey by detector 56.
Circuit 58 is down to main power circuit, it by diode make battery become " or " relation-at the one-shot battery (for example alkaline battery) at BC4 place or at the nickel-cadmium battery at BC5 place.Or gate diode (diode OR-ing) is finished with D4 by diode D10, D5 and it make all three power supplys be one-shot battery, nickel-cadmium battery or external power become " or " relation.When connecting external power, by or gate diode, circuit will use external power all the time, because it is than the voltage height of those two kinds of batteries.
Shown in Fig. 3, the circuit of being made up of Q27, RB132, D9 and RB131 60 is D4 along separate routes.If nickel-cadmium chargeable battery, this is the circuit that is used for its charging.Contact BC1-BC5 is in battery case, and they can be by application number No, exercise question the making that patent disclosed of awaiting the reply of submitting to simultaneously with the application for " battery case " like that, and this patent and the present invention transfer same assignee, award and draw at this as a reference.
Main power switch SW1 is dpdt double-pole double-throw (DPDT) (DPDT) switch.When this main switch was closed, it was linked battery or external power (or power supply that the extension element shown in 62 is come from Fig. 3) and indicates 64 of SWTCHD DC among Fig. 3, and it leads to a DC-DC converter, and its produces moves the required voltage of machine.
As shown in the figure, main power switch SW1 also switches to bridge battery circuit 30 to power supply and 5 volts of voltage stabilizers that bridge battery circuit 30 and indicates Q33 is linked to each other.The right of voltage stabilizer Q33 is another diode OR-gate at D6 and D7 place.The circuit that enters D7 receives the power supply of free 64 converters of supplying with, this system voltage by D6 and D7 mutually " or ".Have only that voltage stabilizer Q33 just works when system places standby mode and primary power to shift out, in this case, the DC-DC converter is closed, and bridge joint battery 22 is taken over RAM(referring to RAM VCC through voltage stabilizer Q33).Bridge joint battery 22 and voltage stabilizer are only powered to RAM.
Like this, D6 and D7 provide another OR-circuit between from 5 volts of power supplys of the converter of DC-DC and 5 volts of voltage stabilizer Q33 by 22 power supplies of bridge joint battery.The auxiliary stabilizer of Q33 only when power switch closure and main battery and external power lose just by the bridge joint powered battery.
Read by software with the standby mode of backup circuit breaker or formation automatically as mentioned above.Software sets about closing the DC-DC converter, takes out all crucial parameters of machine.It takes out the information and the machine state of the memory under program that is moving and deposits main RAM in.When these were finished, software was closed the DC-DC converter then.After this, main battery (if loading onto) or bridge joint battery keep main RAM effective.
When the bridge joint battery discharged to the memory power supply, diode VSK140 was as the current path that provides from Q33 to ground.
When the operator reuses backup circuit breaker, just recover all programs and former video demonstration etc.By after inserting new battery, connecting external power etc. and bring power supply once more, the parameter of all hardware is all recovered together.
Fig. 3 also represents to indicate 66 of VRAM PU, can be by main battery or bridge joint powered battery during standby mode.This is showing that memory chip places low power mode during standby mode.
Power supply wiring capacitor (power distributing capacitors) 68 is shown in lower right among Fig. 3, is used to reduce the noise on the RAM VCC line.They do not absorb any power, but the purpose of the container of low impedance source of providing or stores power is provided.
Though we have illustrated and have narrated the preferred embodiment of our invention, but should be appreciated that, these embodiment can be changed and be changed, thereby we do not wish our invention is confined to described details, and we wish these variations and change still to drop within the scope of following claim.
Claims (11)
1, a kind of be arranged in the computing machine that has shell and demonstration and make it to operate by the main battery power supply, be used for preventing the effectively system of storage information and loss of data of computing machine between the stage of replacement at this main battery, it is characterized in that comprising:
Be used to take out and change the battery replacement device of described main battery;
Be arranged in the counter body and link to each other, have enough capacity with computing machine, can be in the short time that enough described main batterys is changed to the bridge connecting battery device of computing machine part power supply at least; With
Be used for main battery between the stage of replacement because to computer power supply, the bridge connecting battery device capacity reduces the back to its charging device that recharges.
2, the system as claimed in claim 1 is characterized in that, described charging device comprises the device of the power of the main battery that using makes a fresh start changes to described bridge joint battery charge.
3, system as claimed in claim 2 is characterized in that, described charging device comprises and is used for changing the back provides the short time rapid charge to described bridge connecting battery device from main battery charging quickly device at main battery.
4, system as claimed in claim 3 is characterized in that, described system further comprises, is used for after described rapid charge, and the trickle charge device of very low and continuous boost charge is provided to described bridge joint battery from described main battery.
5, the system as claimed in claim 1, it is characterized in that, described charging device comprise use from the power of described main battery to described bridge connecting battery device charging and in about 3 minutes to the bridge connecting battery device charging, make described bridge connecting battery device in the described short time, can provide enough power to support the device of the described part of computing machine.
6, the system as claimed in claim 1, it is characterized in that described computing machine comprises backup device, this device places standby mode to computing machine, promptly except that computing machine shows memory and main RAM part, the state of the power consumption component Close All of computing machine, and during standby mode, described bridge connecting battery device can make to show that storage information and effective storage information are preserved to main RAM and the power supply of demonstration memory when main battery shifts out; Described backup device comprises and is used for changing the recovery device that the back returns to computing machine the full operation state at main battery.
7, system as claimed in claim 6 is characterized in that, described backup device comprises the device that automatically computing machine is placed standby mode and keep RAM then with bridge connecting battery device when main battery reaches predetermined low level.
8, in a computing machine with main battery work, one at this main battery between the stage of replacement, keeps the circuit that main random memory or RAM power supply are effective, and it is characterized in that it comprises:
Be connected in the circuit, capacity is less than the bridge joint battery of described main battery;
In described circuit, be used for that detection computations machine main power switch is connected or when main power switch is closed, detection is to the power supply of the computer power supply pick-up unit to the high voltage power source change;
Respond described main switch and connect or respond the variation that detects to described high voltage source, play the device of trend bridge joint battery short time rapid charge; With
Closed and when not having other power supplys and existing when main power switch, make the device of described bridge joint battery to the main RAM power supply of computing machine.
9, circuit as claimed in claim 8 is characterized in that, this circuit further is included in the power supply that utilizes described high voltage after the described rapid charge provides device from low trickle charge to described bridge joint battery.
10, circuit as claimed in claim 8, it is characterized in that this circuit further comprises the backup device that is used for computing machine is placed standby mode, in this mode, whenever main battery when computing machine shifts out, main RAM is kept and all other consuming components of computing machine all are closed.
11, circuit as claimed in claim 10 is characterized in that, described backup device comprises when battery reaches predetermined low level, places computing machine standby mode to keep the device of RAM then with the bridge joint battery automatically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US36495089A | 1989-06-12 | 1989-06-12 | |
| US364950 | 1989-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1050100A true CN1050100A (en) | 1991-03-20 |
Family
ID=23436829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90104408 Pending CN1050100A (en) | 1989-06-12 | 1990-06-11 | Continuous type computing machine during the replacing battery |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1050100A (en) |
| AU (1) | AU5921990A (en) |
| CA (1) | CA2018651A1 (en) |
| WO (1) | WO1990016024A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306363C (en) * | 2002-08-07 | 2007-03-21 | 希旺科技股份有限公司 | Power Management Device for Electronic Peripheral Card |
| CN100478841C (en) * | 2004-06-29 | 2009-04-15 | 英特尔公司 | Providing power supply to computer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009049230B3 (en) * | 2009-10-13 | 2010-10-21 | Siemens Aktiengesellschaft | Electrical device e.g. note book, for use in automation technology in industry, has electrical components attached via additional switch, which transmits failure signal to power supply unit such that additional switch is opened |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935525A (en) * | 1974-09-30 | 1976-01-27 | The Black And Decker Manufacturing Company | Battery charging circuit with thermostat control |
| JPS56122132U (en) * | 1980-02-18 | 1981-09-17 | ||
| US4315162A (en) * | 1980-05-09 | 1982-02-09 | Control Technology, Incorporated | Reserve power supply for computers |
| USRE32200E (en) * | 1980-11-03 | 1986-07-08 | Fairchild Semiconductor Corporation | MOS battery backup controller for microcomputer random access memory |
| US4384350A (en) * | 1980-11-03 | 1983-05-17 | Fairchild Camera & Instrument Corp. | MOS Battery backup controller for microcomputer random access memory |
| US4394612A (en) * | 1982-01-04 | 1983-07-19 | Skil Corporation | Battery charging circuit |
| JPS58171537U (en) * | 1982-05-07 | 1983-11-16 | ブラザー工業株式会社 | Electronics |
| JPS59142799A (en) * | 1983-02-04 | 1984-08-16 | Hitachi Ltd | Doubled storage device with electricity storage device for backup |
| US4777626A (en) * | 1984-12-22 | 1988-10-11 | Tokyo Electric Co., Ltd. | Memory device having backup power supply |
| US4816862A (en) * | 1984-12-29 | 1989-03-28 | Minolta Camera Kabushiki Kaisha | Power supply system for memory unit of camera |
| JPS6227843A (en) * | 1985-07-29 | 1987-02-05 | Sharp Corp | Electronic equipment |
| US4757505A (en) * | 1986-04-30 | 1988-07-12 | Elgar Electronics Corp. | Computer power system |
| US4868832A (en) * | 1986-04-30 | 1989-09-19 | Marrington S Paul | Computer power system |
| US4712055A (en) * | 1987-04-01 | 1987-12-08 | The Singer Company | Battery charger circuit |
| US4884242A (en) * | 1988-05-26 | 1989-11-28 | Applied Automation, Inc. | Backup power system for dynamic memory |
-
1990
- 1990-06-06 WO PCT/US1990/003203 patent/WO1990016024A1/en not_active Ceased
- 1990-06-06 AU AU59219/90A patent/AU5921990A/en not_active Abandoned
- 1990-06-11 CN CN 90104408 patent/CN1050100A/en active Pending
- 1990-06-11 CA CA 2018651 patent/CA2018651A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306363C (en) * | 2002-08-07 | 2007-03-21 | 希旺科技股份有限公司 | Power Management Device for Electronic Peripheral Card |
| CN100478841C (en) * | 2004-06-29 | 2009-04-15 | 英特尔公司 | Providing power supply to computer |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2018651A1 (en) | 1990-12-12 |
| AU5921990A (en) | 1991-01-08 |
| WO1990016024A1 (en) | 1990-12-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |