| 发明名称 |
MULTI FREQUENCY SIGNAL TRANSMISSION CIRCUIT |
| 摘要 |
PURPOSE:To enable the multi frequency signal transmission system with long life and economically from the standpoint of entire aspects, by compensating the lowering in economy due to the hybrid transformer, oscillators, and amplifiers. |
| 申请公布号 |
JPS52130218(A) |
申请公布日期 |
1977.11.01 |
| 申请号 |
JP19760046544 |
申请日期 |
1976.04.26 |
| 申请人 |
HITACHI LTD;NIPPON TELEGRAPH & TELEPHONE |
发明人 |
TAKESHITA TETSUO;HANABE KENICHI |
| 分类号 |
H04Q1/45;H04L27/26;H04Q1/453 |
主分类号 |
H04Q1/45 |
| 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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