JPS5125003A - - Google Patents
Info
- Publication number
- JPS5125003A JPS5125003A JP50080482A JP8048275A JPS5125003A JP S5125003 A JPS5125003 A JP S5125003A JP 50080482 A JP50080482 A JP 50080482A JP 8048275 A JP8048275 A JP 8048275A JP S5125003 A JPS5125003 A JP S5125003A
- Authority
- JP
- Japan
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT51772/74A IT1029547B (it) | 1974-06-27 | 1974-06-27 | Impianto interfonico con apparecchi in parallelo su unica linea bifilare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5125003A true JPS5125003A (da) | 1976-03-01 |
Family
ID=11275703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50080482A Pending JPS5125003A (da) | 1974-06-27 | 1975-06-27 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5125003A (da) |
| BE (1) | BE830487A (da) |
| DE (1) | DE2528854A1 (da) |
| DK (1) | DK291475A (da) |
| FR (1) | FR2276755A1 (da) |
| IT (1) | IT1029547B (da) |
| LU (1) | LU72821A1 (da) |
| NL (1) | NL7507718A (da) |
| SE (1) | SE7507069L (da) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52118091U (da) * | 1976-03-03 | 1977-09-07 | ||
| JPS56109065A (en) * | 1980-02-01 | 1981-08-29 | Fujitsu Ltd | Selective callout system by push button telephone set |
| JPS5745768A (en) * | 1980-08-30 | 1982-03-15 | Matsushita Electric Works Ltd | Emergency telephone device |
| JPS61174859A (ja) * | 1985-01-30 | 1986-08-06 | Aihon Kk | インタ−ホン電話機混成装置 |
| JPS61128860U (da) * | 1985-01-31 | 1986-08-12 | ||
| JPS6276851A (ja) * | 1985-09-30 | 1987-04-08 | Hitachi Elevator Eng & Serv Co Ltd | 多局インタ−ホンの選局装置 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2819386A1 (de) * | 1978-05-03 | 1979-11-08 | Bosch Gmbh Robert | Fernbedienung fuer funksprechgeraete |
| IT1110111B (it) * | 1979-01-12 | 1985-12-23 | Acet Srl | Impianto citofonico a portiere elettrico a due fili,suscettibile di utilizzare un pressistente impianto a campanello,senza necessita' di ulteriori linee di alimentazione |
| DE2946177C2 (de) * | 1979-11-15 | 1988-08-18 | S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen | Hausanlage zur Übertragung von Informationen |
| DE3320397A1 (de) * | 1983-06-06 | 1984-12-06 | Siemens AG, 1000 Berlin und 8000 München | Anordnung zur vermittelbaren uebertragung von tonsignalen |
-
1974
- 1974-06-27 IT IT51772/74A patent/IT1029547B/it active
-
1975
- 1975-06-18 SE SE7507069A patent/SE7507069L/xx unknown
- 1975-06-18 FR FR7519116A patent/FR2276755A1/fr not_active Withdrawn
- 1975-06-20 BE BE157549A patent/BE830487A/xx unknown
- 1975-06-25 LU LU72821A patent/LU72821A1/xx unknown
- 1975-06-26 DK DK291475A patent/DK291475A/da unknown
- 1975-06-27 JP JP50080482A patent/JPS5125003A/ja active Pending
- 1975-06-27 DE DE19752528854 patent/DE2528854A1/de active Pending
- 1975-06-27 NL NL7507718A patent/NL7507718A/xx unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52118091U (da) * | 1976-03-03 | 1977-09-07 | ||
| JPS56109065A (en) * | 1980-02-01 | 1981-08-29 | Fujitsu Ltd | Selective callout system by push button telephone set |
| JPS6232863B2 (da) * | 1980-02-01 | 1987-07-17 | Fujitsu Kk | |
| JPS5745768A (en) * | 1980-08-30 | 1982-03-15 | Matsushita Electric Works Ltd | Emergency telephone device |
| JPS61174859A (ja) * | 1985-01-30 | 1986-08-06 | Aihon Kk | インタ−ホン電話機混成装置 |
| JPS61128860U (da) * | 1985-01-31 | 1986-08-12 | ||
| JPS6276851A (ja) * | 1985-09-30 | 1987-04-08 | Hitachi Elevator Eng & Serv Co Ltd | 多局インタ−ホンの選局装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7507718A (nl) | 1975-12-30 |
| BE830487A (fr) | 1975-10-16 |
| DK291475A (da) | 1975-12-28 |
| IT1029547B (it) | 1979-03-20 |
| FR2276755A1 (fr) | 1976-01-23 |
| LU72821A1 (da) | 1975-09-29 |
| SE7507069L (sv) | 1975-12-29 |
| DE2528854A1 (de) | 1976-01-08 |