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发明名称
Schaltungsanordnung fuer Fernmelde-, insbesondere Fernsprechanlagen
摘要
申请公布号
DE676984(C)
申请公布日期
1939.06.16
申请号
DE1936S123969D
申请日期
1936.08.27
申请人
SIEMENS APPARATE UND MASCHINEN G.M.B.H.
发明人
WOLAK KURT
分类号
H04M9/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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