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发明名称
Kontrollvorrichtung fuer Fernsprechanlagen
摘要
申请公布号
DE724446(C)
申请公布日期
1942.08.27
申请号
DE1939P079108D
申请日期
1939.05.05
申请人
FERNMELDETECHNISCHE STAATSWERKEI¬FSWI¬
发明人
KUHN STANISLAW
分类号
H04M3/30
主分类号
H04M3/30
代理机构
代理人
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地址
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