| 发明名称 |
PUSHHPHONE |
| 摘要 |
PURPOSE:To simplify dial switch mechanism by securing stabilized operation against incomplete contact of dial swithc, chattering and external noise coming to telephone by obtaining operation of each section through the level of electric potential. |
| 申请公布号 |
JPS5273607(A) |
申请公布日期 |
1977.06.20 |
| 申请号 |
JP19750149429 |
申请日期 |
1975.12.17 |
| 申请人 |
NIPPON TELEGRAPH & TELEPHONE |
发明人 |
MATSUMOTO KOUICHI;YOSHIRI MAKOTO |
| 分类号 |
H04M1/50;(IPC1-7):04M1/50 |
主分类号 |
H04M1/50 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
