| 发明名称 |
SPEECH CURRENT DISCONNECTION CIRCUIT |
| 摘要 |
PURPOSE:To obtain a more economical circuit as compared with relays by disconnectiong speech current to thereby open the speech path by the use of a shorting semiconductor switching device. |
| 申请公布号 |
JPS53911(A) |
申请公布日期 |
1978.01.07 |
| 申请号 |
JP19760074438 |
申请日期 |
1976.06.25 |
| 申请人 |
HITACHI LTD |
发明人 |
KOJIMA KIMIFUMI;TOKUNAGA MICHIO |
| 分类号 |
H04Q3/42;H04Q3/52 |
主分类号 |
H04Q3/42 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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