HU188613B - Circuit arrangement for limiting numerical selection of telephones - Google Patents

Circuit arrangement for limiting numerical selection of telephones Download PDF

Info

Publication number: HU188613B
Authority: HU; Hungary
Prior art keywords: switch; relay; magnetically controlled; permanent magnet; dial
Prior art date: 1983-03-14

Application number

HU56684A

Other languages

German (de)

English (en)

Hungarian (hu)

Other versions

HUT35888A (en

Inventor

Kiril N Popov

Original Assignee

Sofiiska Telegrafna I Telefonna Stanzia,Bg

Priority date (The priority date 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 date listed.)

1983-03-14

Filing date

1984-02-13

Publication date

1986-04-28

1984-02-13 Application filed by Sofiiska Telegrafna I Telefonna Stanzia,Bg filed Critical Sofiiska Telegrafna I Telefonna Stanzia,Bg

1985-07-29 Publication of HUT35888A publication Critical patent/HUT35888A/hu

1986-04-28 Publication of HU188613B publication Critical patent/HU188613B/hu

Links

230000008878 coupling Effects 0.000 description 1
238000010168 coupling process Methods 0.000 description 1
238000005859 coupling reaction Methods 0.000 description 1
230000003111 delayed effect Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000000034 method Methods 0.000 description 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers

Landscapes

Engineering & Computer Science (AREA)
Computer Security & Cryptography (AREA)
Signal Processing (AREA)
Structure Of Telephone Exchanges (AREA)
Telephonic Communication Services (AREA)
Mechanical Treatment Of Semiconductor (AREA)
Telephone Set Structure (AREA)

HU56684A 1983-03-14 1984-02-13 Circuit arrangement for limiting numerical selection of telephones HU188613B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
BG6010583A BG37516A1 (en)	1983-03-14	1983-03-14	Device for limiting telephone dial selection

Publications (2)

Publication Number	Publication Date
HUT35888A HUT35888A (en)	1985-07-29
HU188613B true HU188613B (en)	1986-04-28

Family

ID=3911892

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
HU56684A HU188613B (en)	1983-03-14	1984-02-13	Circuit arrangement for limiting numerical selection of telephones

Country Status (7)

Country	Link
BG (1)	BG37516A1 (cs)
CS (1)	CS256918B1 (cs)
DD (1)	DD252110A3 (cs)
DE (1)	DE3407085A1 (cs)
HU (1)	HU188613B (cs)
PL (1)	PL142351B1 (cs)
RO (1)	RO89332A (cs)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1268215B (de) *	1965-11-26	1968-05-16	Christos Stathacopoulos	Vorrichtung an einem Fernsprechapparat zum Sperren des Apparates fuer Selbstwaehlferngespraeche
DE2341246A1 (de) *	1973-08-16	1975-02-20	Hagenuk Neufeldt Kuhnke Gmbh	Elektronische sperreinrichtung fuer nummernschalterwahl zur verhinderung der wahl unerwuenschter waehlziffern
SE7411340L (cs) *	1974-01-19	1975-07-21	Masayuki Nagakura

1983
- 1983-03-14 BG BG6010583A patent/BG37516A1/xx unknown
1984
- 1984-01-27 DD DD25965784A patent/DD252110A3/xx not_active IP Right Cessation
- 1984-02-07 CS CS86384A patent/CS256918B1/cs unknown
- 1984-02-13 HU HU56684A patent/HU188613B/hu not_active IP Right Cessation
- 1984-02-27 DE DE19843407085 patent/DE3407085A1/de not_active Withdrawn
- 1984-03-09 PL PL24659984A patent/PL142351B1/pl unknown
- 1984-03-12 RO RO84113898A patent/RO89332A/ro unknown

Also Published As

Publication number	Publication date
PL142351B1 (en)	1987-10-31
CS256918B1 (en)	1988-04-15
PL246599A1 (en)	1984-10-22
RO89332A (ro)	1986-07-30
HUT35888A (en)	1985-07-29
DD252110A3 (de)	1987-12-09
DE3407085A1 (de)	1984-09-20
BG37516A1 (en)	1985-06-14

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Legal Events

Date	Code	Title	Description
1990-06-28	HU90	Patent valid on 900628
1991-01-28	HMM4	Cancellation of final prot. due to non-payment of fee