SE385533B - Tvaapparatsystem - Google Patents
TvaapparatsystemInfo
- Publication number
- SE385533B SE385533B SE7506831A SE7506831A SE385533B SE 385533 B SE385533 B SE 385533B SE 7506831 A SE7506831 A SE 7506831A SE 7506831 A SE7506831 A SE 7506831A SE 385533 B SE385533 B SE 385533B
- Authority
- SE
- Sweden
- Prior art keywords
- apparatus system
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Alarm Systems (AREA)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7506831A SE385533B (sv) | 1975-06-13 | 1975-06-13 | Tvaapparatsystem |
US05/690,076 US4060700A (en) | 1975-06-13 | 1976-05-26 | Two-party telephone system |
GB23501/76A GB1521216A (en) | 1975-06-13 | 1976-06-07 | Telephone systems |
DK262276A DK262276A (da) | 1975-06-13 | 1976-06-11 | To-apparatanleg |
FR7617884A FR2314624A1 (fr) | 1975-06-13 | 1976-06-11 | Ensemble d'intercommunication a deux postes telephoniques |
CH738976A CH600722A5 (da) | 1975-06-13 | 1976-06-11 | |
NL7606340A NL7606340A (nl) | 1975-06-13 | 1976-06-11 | Telefoonstelsel met twee abonneetoestellen. |
CA254,644A CA1048185A (en) | 1975-06-13 | 1976-06-11 | Two-party telephone system |
FI761683A FI761683A (da) | 1975-06-13 | 1976-06-11 | |
NO762025A NO135767C (da) | 1975-06-13 | 1976-06-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7506831A SE385533B (sv) | 1975-06-13 | 1975-06-13 | Tvaapparatsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
SE385533B true SE385533B (sv) | 1976-07-05 |
Family
ID=20324868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7506831A SE385533B (sv) | 1975-06-13 | 1975-06-13 | Tvaapparatsystem |
Country Status (10)
Country | Link |
---|---|
US (1) | US4060700A (da) |
CA (1) | CA1048185A (da) |
CH (1) | CH600722A5 (da) |
DK (1) | DK262276A (da) |
FI (1) | FI761683A (da) |
FR (1) | FR2314624A1 (da) |
GB (1) | GB1521216A (da) |
NL (1) | NL7606340A (da) |
NO (1) | NO135767C (da) |
SE (1) | SE385533B (da) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4220827A (en) * | 1979-02-21 | 1980-09-02 | Bell Telephone Laboratories, Incorporated | Telephone signaling circuit |
FR2517910A1 (fr) * | 1981-12-07 | 1983-06-10 | Faure Yves | Dispositif de branchement de deux postes telephoniques sur la meme ligne d'appel |
GB2166927A (en) * | 1984-11-09 | 1986-05-14 | Austin Taylor Electrical Ltd | Telephone control system |
GB8515657D0 (en) * | 1985-06-20 | 1985-07-24 | Gen Electric Co Plc | Telephone apparatus |
GB2206015A (en) * | 1986-05-12 | 1988-12-21 | Rice Multiphones Inc | Multifunction two line telephone system |
GB2207325A (en) * | 1987-06-23 | 1989-01-25 | Boon Chen Lim | Telephone with intercom facility |
US4893334A (en) * | 1987-08-28 | 1990-01-09 | Power Play | Intercommunication system for telephones |
US5502762A (en) * | 1994-06-10 | 1996-03-26 | Andrew; Brian J. | System and method for simultaneously controlling ringing at local and remote telephones |
US5796789A (en) * | 1997-01-06 | 1998-08-18 | Omega Electronics Inc. | Alerting device for telephones |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE301025C (da) * | ||||
US698386A (en) * | 1901-01-23 | 1902-04-22 | Albert K Andriano | Secret-service telephone system. |
DE703546C (de) * | 1929-10-01 | 1941-03-11 | Normalzeit Lehner & Co | Schaltungsanordnung fuer Fernsprechnebenstellenanlagen |
FR1441285A (da) * | 1965-07-26 | 1966-06-03 | Cie Des Telephones | |
US3567868A (en) * | 1968-08-27 | 1971-03-02 | Tokyo Shibaura Electric Co | Interphone device having presence indicator means |
GB1480223A (en) * | 1973-10-26 | 1977-07-20 | Gte International Inc | Telephone intercommunication system providing common access to a communication line |
US3941933A (en) * | 1974-08-20 | 1976-03-02 | Jab Company, Inc. | Paging intercommunication system |
-
1975
- 1975-06-13 SE SE7506831A patent/SE385533B/xx not_active IP Right Cessation
-
1976
- 1976-05-26 US US05/690,076 patent/US4060700A/en not_active Expired - Lifetime
- 1976-06-07 GB GB23501/76A patent/GB1521216A/en not_active Expired
- 1976-06-11 NO NO762025A patent/NO135767C/no unknown
- 1976-06-11 CH CH738976A patent/CH600722A5/xx not_active IP Right Cessation
- 1976-06-11 CA CA254,644A patent/CA1048185A/en not_active Expired
- 1976-06-11 FR FR7617884A patent/FR2314624A1/fr not_active Withdrawn
- 1976-06-11 FI FI761683A patent/FI761683A/fi not_active Application Discontinuation
- 1976-06-11 NL NL7606340A patent/NL7606340A/xx not_active Application Discontinuation
- 1976-06-11 DK DK262276A patent/DK262276A/da unknown
Also Published As
Publication number | Publication date |
---|---|
NO135767B (da) | 1977-02-14 |
US4060700A (en) | 1977-11-29 |
CA1048185A (en) | 1979-02-06 |
DK262276A (da) | 1976-12-14 |
FI761683A (da) | 1976-12-14 |
CH600722A5 (da) | 1978-06-30 |
GB1521216A (en) | 1978-08-16 |
NO762025L (da) | 1976-12-14 |
NL7606340A (nl) | 1976-12-15 |
FR2314624A1 (fr) | 1977-01-07 |
NO135767C (da) | 1977-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7506831-2 Effective date: 19930109 Format of ref document f/p: F |