FI751974A - - Google Patents
Info
- Publication number
- FI751974A FI751974A FI751974A FI751974A FI751974A FI 751974 A FI751974 A FI 751974A FI 751974 A FI751974 A FI 751974A FI 751974 A FI751974 A FI 751974A FI 751974 A FI751974 A FI 751974A
- Authority
- FI
- Finland
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Circuit For Audible Band Transducer (AREA)
- Mobile Radio Communication Systems (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2434321 | 1974-07-17 | ||
| DE2434321A DE2434321C3 (de) | 1974-07-17 | 1974-07-17 | Schaltungsanordnung für tastengesteuerte Wechselsprech-, Gegensprech- oder Lautsprecheranlagen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI751974A true FI751974A (US06371994-20020416-C00029.png) | 1976-01-18 |
| FI61111B FI61111B (fi) | 1982-01-29 |
| FI61111C FI61111C (fi) | 1982-05-10 |
Family
ID=5920787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI751974A FI61111C (fi) | 1974-07-17 | 1975-07-07 | Kopplingsanordning foer tryckknappsstyrda vaexelsamtals- eller hoegtalaranlaeggningar |
Country Status (9)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2837950C2 (de) * | 1978-08-31 | 1986-11-13 | Neumann Elektronik GmbH, 4330 Mülheim | Vermittlungseinrichtung für eine tastengesteuerte Wechsel-, Gegen- oder Lautsprechanlage |
| DE3418484C1 (de) * | 1984-05-18 | 1985-08-29 | Neumann Elektronik GmbH, 4330 Mülheim | Rücksprecheinrichtung für eine Teilnehmerstelle einer tastengesteuerten Wechselsprechanlage mit Linienwahl |
| DE4334906C2 (de) * | 1993-10-13 | 1997-05-07 | Neumann Elektronik Gmbh | Einrichtung zur Übertragung von Ruf- und Belegungszustandssignalen von Wechsel- oder Gegen-Lautsprechanlagen mit Linienwahl über eine Zweidraht-Fernleitung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1512811C3 (de) * | 1967-04-27 | 1984-08-02 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Schaltungsanordnung für die Prüfung der sprechstelleneigenen Einrichtungen in Sprechanlagen |
-
1974
- 1974-07-17 DE DE2434321A patent/DE2434321C3/de not_active Expired
-
1975
- 1975-06-24 AT AT482375A patent/AT341590B/de not_active IP Right Cessation
- 1975-06-25 CH CH827875A patent/CH596721A5/xx not_active IP Right Cessation
- 1975-07-07 FI FI751974A patent/FI61111C/fi not_active IP Right Cessation
- 1975-07-10 ES ES439298A patent/ES439298A1/es not_active Expired
- 1975-07-11 FR FR7522457A patent/FR2289079A1/fr active Granted
- 1975-07-14 SE SE7508032A patent/SE7508032L/xx unknown
- 1975-07-16 NO NO752541A patent/NO141583C/no unknown
- 1975-07-16 BE BE158337A patent/BE831415A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE7508032L (sv) | 1976-01-19 |
| DE2434321C3 (de) | 1983-12-08 |
| NO141583B (no) | 1979-12-27 |
| FR2289079B1 (US06371994-20020416-C00029.png) | 1982-03-26 |
| BE831415A (fr) | 1975-11-17 |
| FI61111C (fi) | 1982-05-10 |
| NO141583C (no) | 1980-04-09 |
| FR2289079A1 (fr) | 1976-05-21 |
| NO752541L (US06371994-20020416-C00029.png) | 1976-01-20 |
| AT341590B (de) | 1978-02-10 |
| ES439298A1 (es) | 1977-03-01 |
| FI61111B (fi) | 1982-01-29 |
| DE2434321A1 (de) | 1976-01-22 |
| ATA482375A (de) | 1977-06-15 |
| DE2434321B2 (de) | 1977-01-20 |
| CH596721A5 (US06371994-20020416-C00029.png) | 1978-03-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: NEUMANN ELEKTRONIK GMBH |