JPS5330802A - Key telephone system - Google Patents
Key telephone systemInfo
- Publication number
- JPS5330802A JPS5330802A JP10550076A JP10550076A JPS5330802A JP S5330802 A JPS5330802 A JP S5330802A JP 10550076 A JP10550076 A JP 10550076A JP 10550076 A JP10550076 A JP 10550076A JP S5330802 A JPS5330802 A JP S5330802A
- Authority
- JP
- Japan
- Prior art keywords
- telephone system
- key telephone
- key
- telephone
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10550076A JPS5330802A (en) | 1976-09-03 | 1976-09-03 | Key telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10550076A JPS5330802A (en) | 1976-09-03 | 1976-09-03 | Key telephone system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5330802A true JPS5330802A (en) | 1978-03-23 |
JPS5438003B2 JPS5438003B2 (en) | 1979-11-19 |
Family
ID=14409311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10550076A Granted JPS5330802A (en) | 1976-09-03 | 1976-09-03 | Key telephone system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5330802A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56161755A (en) * | 1980-05-16 | 1981-12-12 | Iwatsu Electric Co Ltd | Power supply system for key telephone set |
JPS5846757A (en) * | 1981-09-16 | 1983-03-18 | Iwatsu Electric Co Ltd | Doorphone calling system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5213706A (en) * | 1975-07-23 | 1977-02-02 | Kanda Tsushin Kogyo Kk | Key telephone system |
JPS52104008A (en) * | 1976-02-27 | 1977-09-01 | Taiko Denki Seisakusho:Kk | Connecting method of button telephone apparatus |
JPS52111302A (en) * | 1976-03-15 | 1977-09-19 | Taiko Denki Seisakusho:Kk | Connecting system of button telephone set |
JPS52116004A (en) * | 1976-03-26 | 1977-09-29 | Kanda Tsushin Kogyo Kk | Voice call system |
JPS52120706A (en) * | 1976-04-05 | 1977-10-11 | Kanda Tsushin Kogyo Kk | Improved parent-child telephone equipment |
-
1976
- 1976-09-03 JP JP10550076A patent/JPS5330802A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5213706A (en) * | 1975-07-23 | 1977-02-02 | Kanda Tsushin Kogyo Kk | Key telephone system |
JPS52104008A (en) * | 1976-02-27 | 1977-09-01 | Taiko Denki Seisakusho:Kk | Connecting method of button telephone apparatus |
JPS52111302A (en) * | 1976-03-15 | 1977-09-19 | Taiko Denki Seisakusho:Kk | Connecting system of button telephone set |
JPS52116004A (en) * | 1976-03-26 | 1977-09-29 | Kanda Tsushin Kogyo Kk | Voice call system |
JPS52120706A (en) * | 1976-04-05 | 1977-10-11 | Kanda Tsushin Kogyo Kk | Improved parent-child telephone equipment |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56161755A (en) * | 1980-05-16 | 1981-12-12 | Iwatsu Electric Co Ltd | Power supply system for key telephone set |
JPS5846757A (en) * | 1981-09-16 | 1983-03-18 | Iwatsu Electric Co Ltd | Doorphone calling system |
Also Published As
Publication number | Publication date |
---|---|
JPS5438003B2 (en) | 1979-11-19 |
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