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发明名称
Schaltung zur UEbertragung von Signalen in Fernsprechanlagen
摘要
申请公布号
DE674856(C)
申请公布日期
1939.04.27
申请号
DE1932ST49345D
申请日期
1932.05.20
申请人
STANDARD ELEKTRIZITAETS-GESELLSCHAFT A.-G.
发明人
分类号
H04M7/08
主分类号
H04M7/08
代理机构
代理人
主权项
地址
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