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发明名称
Ubertragungsanlage mit Mitteln zum Koppeln eines Hilfsstromkreises an eine Übertragungsleitung.
摘要
申请公布号
CH147955(A)
申请公布日期
1931.06.30
申请号
CHD147955
申请日期
1929.08.19
申请人
BELL TELEPHONE MANUFACTURING CO.
发明人
CO. BELL TELEPHONE MANUFACTURING
分类号
主分类号
代理机构
代理人
主权项
地址
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