JPS53107205A - Button telephone set - Google Patents
Button telephone setInfo
- Publication number
- JPS53107205A JPS53107205A JP2144077A JP2144077A JPS53107205A JP S53107205 A JPS53107205 A JP S53107205A JP 2144077 A JP2144077 A JP 2144077A JP 2144077 A JP2144077 A JP 2144077A JP S53107205 A JPS53107205 A JP S53107205A
- Authority
- JP
- Japan
- Prior art keywords
- telephone set
- button telephone
- button
- 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.)
- Pending
Links
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2144077A JPS53107205A (en) | 1977-03-02 | 1977-03-02 | Button telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2144077A JPS53107205A (en) | 1977-03-02 | 1977-03-02 | Button telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53107205A true JPS53107205A (en) | 1978-09-19 |
Family
ID=12055015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2144077A Pending JPS53107205A (en) | 1977-03-02 | 1977-03-02 | Button telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53107205A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62239787A (en) * | 1986-04-11 | 1987-10-20 | Matsushita Electric Ind Co Ltd | Key telephone system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5342603A (en) * | 1976-09-30 | 1978-04-18 | Tamura Electric Works Ltd | Signal system by voltage discrimination for key telephone set |
-
1977
- 1977-03-02 JP JP2144077A patent/JPS53107205A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5342603A (en) * | 1976-09-30 | 1978-04-18 | Tamura Electric Works Ltd | Signal system by voltage discrimination for key telephone set |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62239787A (en) * | 1986-04-11 | 1987-10-20 | Matsushita Electric Ind Co Ltd | Key telephone system |
JP2506658B2 (en) * | 1986-04-11 | 1996-06-12 | 松下電器産業株式会社 | Button telephone device |
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