发明名称 |
Wireless extension telephone |
摘要 |
A wireless extension telephone system including a base unit connected to a telephone line and a remote extension unit. Both base and remote units each include a radio transmitter and a radio receiver. Also included in the base unit is bimodal tuned circuit operable as a filter and as an oscillator.
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申请公布号 |
US4471167(A) |
申请公布日期 |
1984.09.11 |
申请号 |
US19820450410 |
申请日期 |
1982.12.16 |
申请人 |
GTE AUTOMATIC ELECTRIC INC. |
发明人 |
CRIPPS, PETER K. |
分类号 |
H04M1/725;(IPC1-7):H04Q7/04 |
主分类号 |
H04M1/725 |
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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