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发明名称
Schaltungsanordnung zur Rufstromaussendung in Fernsprechanlagen
摘要
申请公布号
DE1912011(A1)
申请公布日期
1970.09.17
申请号
DE19691912011
申请日期
1969.03.10
申请人
FRIEDRICH MERK TELEFONBAU GMBH
发明人
FREUND,GEORG;MUTZE,WOLF
分类号
H04M19/02
主分类号
H04M19/02
代理机构
代理人
主权项
地址
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