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发明名称
TELEPHONE INSTRUMENTS
摘要
申请公布号
GB1571985(A)
申请公布日期
1980.07.23
申请号
GB19760015091
申请日期
1976.04.13
申请人
POST OFFICE
发明人
分类号
H04M1/08;(IPC1-7):H04M1/08
主分类号
H04M1/08
代理机构
代理人
主权项
地址
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