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发明名称
Telephone circuit
摘要
申请公布号
GB2182527(A)
申请公布日期
1987.05.13
申请号
GB19850027054
申请日期
1985.11.02
申请人
* STC PLC
发明人
DAVID * ASHWORTH
分类号
H04M19/08;(IPC1-7):H04M1/00
主分类号
H04M19/08
代理机构
代理人
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地址
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