JPS4990007A - - Google Patents
Info
- Publication number
- JPS4990007A JPS4990007A JP222173A JP222173A JPS4990007A JP S4990007 A JPS4990007 A JP S4990007A JP 222173 A JP222173 A JP 222173A JP 222173 A JP222173 A JP 222173A JP S4990007 A JPS4990007 A JP S4990007A
- 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
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Circuit For Audible Band Transducer (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP222173A JPS4990007A (en) | 1972-12-27 | 1972-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP222173A JPS4990007A (en) | 1972-12-27 | 1972-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4990007A true JPS4990007A (en) | 1974-08-28 |
Family
ID=11523288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP222173A Pending JPS4990007A (en) | 1972-12-27 | 1972-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS4990007A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5567267A (en) * | 1978-11-14 | 1980-05-21 | Nec Corp | Hand-free telephone set |
-
1972
- 1972-12-27 JP JP222173A patent/JPS4990007A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5567267A (en) * | 1978-11-14 | 1980-05-21 | Nec Corp | Hand-free telephone set |
| JPS6217424B2 (en) * | 1978-11-14 | 1987-04-17 | Nippon Electric Co |