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发明名称
Perfectionnements aux postes d'abonnés
摘要
申请公布号
FR63718(E)
申请公布日期
1955.10.03
申请号
FRD63718
申请日期
1952.04.25
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
BEADLE ANTHONY CRISP
分类号
H04M1/76
主分类号
H04M1/76
代理机构
代理人
主权项
地址
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