JPS498106A - - Google Patents
Info
- Publication number
- JPS498106A JPS498106A JP4617072A JP4617072A JPS498106A JP S498106 A JPS498106 A JP S498106A JP 4617072 A JP4617072 A JP 4617072A JP 4617072 A JP4617072 A JP 4617072A JP S498106 A JPS498106 A JP S498106A
- 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.)
- Granted
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 |
|---|---|---|---|
| JP4617072A JPS53884B2 (en:Method) | 1972-05-10 | 1972-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4617072A JPS53884B2 (en:Method) | 1972-05-10 | 1972-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS498106A true JPS498106A (en:Method) | 1974-01-24 |
| JPS53884B2 JPS53884B2 (en:Method) | 1978-01-12 |
Family
ID=12739533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4617072A Expired JPS53884B2 (en:Method) | 1972-05-10 | 1972-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS53884B2 (en:Method) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437609A (en) * | 1977-08-31 | 1979-03-20 | Toshiba Corp | Extension call system |
| JPS5442901A (en) * | 1977-09-12 | 1979-04-05 | Kanda Tsushin Kogyo Kk | Extension circuit control system for key telephone set |
-
1972
- 1972-05-10 JP JP4617072A patent/JPS53884B2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437609A (en) * | 1977-08-31 | 1979-03-20 | Toshiba Corp | Extension call system |
| JPS5442901A (en) * | 1977-09-12 | 1979-04-05 | Kanda Tsushin Kogyo Kk | Extension circuit control system for key telephone set |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53884B2 (en:Method) | 1978-01-12 |