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发明名称
Câble téléphonique fonctionnant avec des amplificateurs
摘要
申请公布号
FR747368(A)
申请公布日期
1933.06.15
申请号
FRD747368
申请日期
1932.12.10
申请人
SIEMENS & HALSKE AKTIEN-GESELLSCHAFT
发明人
分类号
H01B11/04
主分类号
H01B11/04
代理机构
代理人
主权项
地址
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