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发明名称
Schaltung fuer Untervermittlungsstellen mit Waehlerbetrieb
摘要
申请公布号
DE697664(C)
申请公布日期
1940.10.24
申请号
DE193401M8762D
申请日期
1934.10.07
申请人
MIX & GENEST AKT.-GES.
发明人
HEYDUCK ALFRED
分类号
H04M3/58
主分类号
H04M3/58
代理机构
代理人
主权项
地址
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