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发明名称
Câble de pupin pour téléphonie simultanée à basse fréquence et à fréquence porteuse
摘要
申请公布号
FR42216(E)
申请公布日期
1933.06.15
申请号
FRD42216
申请日期
1932.07.06
申请人
SIEMENS & HALSKE AKTIEN-GESELLSCHAFT
发明人
分类号
H04B3/00;H04M1/78
主分类号
H04B3/00
代理机构
代理人
主权项
地址
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