BE492617A - - Google Patents
Info
- Publication number
- BE492617A BE492617A BE492617DA BE492617A BE 492617 A BE492617 A BE 492617A BE 492617D A BE492617D A BE 492617DA BE 492617 A BE492617 A BE 492617A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of DC pulses
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
- H03K17/288—Modifications for introducing a time delay before switching in tube switches
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Magnetic Treatment Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL277500X | 1948-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE492617A true BE492617A (cs) |
Family
ID=19782177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE492617D BE492617A (cs) | 1948-12-10 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE492617A (cs) |
| CH (1) | CH277500A (cs) |
| FR (1) | FR1001100A (cs) |
| GB (1) | GB678388A (cs) |
-
0
- BE BE492617D patent/BE492617A/xx unknown
-
1949
- 1949-12-07 GB GB31416/49A patent/GB678388A/en not_active Expired
- 1949-12-08 FR FR1001100D patent/FR1001100A/fr not_active Expired
- 1949-12-08 CH CH277500D patent/CH277500A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH277500A (de) | 1951-08-31 |
| FR1001100A (fr) | 1952-02-19 |
| GB678388A (en) | 1952-09-03 |