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发明名称
Fernsprechnebenstellenanlage
摘要
申请公布号
DE1487591(A1)
申请公布日期
1969.10.23
申请号
DE19661487591
申请日期
1966.10.18
申请人
AMERICAN TELEPHONE EXTENSION CORP.
发明人
PHILLIP DRIVER,JOEL
分类号
H04M1/725
主分类号
H04M1/725
代理机构
代理人
主权项
地址
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