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发明名称
Ruf- und Signalmaschine, insbesondere fuer Fernsprech-Kleinanlagen
摘要
申请公布号
DE684955(C)
申请公布日期
1939.12.08
申请号
DE1938M143182D
申请日期
1938.10.30
申请人
MIX & GENEST AKT.-GES.
发明人
PHILIPP ERICH
分类号
H04M19/02
主分类号
H04M19/02
代理机构
代理人
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地址
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