JPS53103304A - Button telephone set circuit system - Google Patents
Button telephone set circuit systemInfo
- Publication number
- JPS53103304A JPS53103304A JP1776677A JP1776677A JPS53103304A JP S53103304 A JPS53103304 A JP S53103304A JP 1776677 A JP1776677 A JP 1776677A JP 1776677 A JP1776677 A JP 1776677A JP S53103304 A JPS53103304 A JP S53103304A
- Authority
- JP
- Japan
- Prior art keywords
- circuit system
- telephone set
- set circuit
- button telephone
- button
- 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
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1776677A JPS53103304A (en) | 1977-02-22 | 1977-02-22 | Button telephone set circuit system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1776677A JPS53103304A (en) | 1977-02-22 | 1977-02-22 | Button telephone set circuit system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53103304A true JPS53103304A (en) | 1978-09-08 |
Family
ID=11952821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1776677A Pending JPS53103304A (en) | 1977-02-22 | 1977-02-22 | Button telephone set circuit system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53103304A (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 |
---|---|---|---|---|
JPS5279706A (en) * | 1975-12-26 | 1977-07-05 | Iwatsu Electric Co Ltd | Subscriber line calling system in key telephone unit |
-
1977
- 1977-02-22 JP JP1776677A patent/JPS53103304A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5279706A (en) * | 1975-12-26 | 1977-07-05 | Iwatsu Electric Co Ltd | Subscriber line calling system in key telephone unit |
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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