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发明名称
Schaltungsanordnung zur Verkehrsbeobachtung in Fernmelde-, insbesondere Fernsprechanlagen
摘要
申请公布号
DE1008364(B)
申请公布日期
1957.05.16
申请号
DE1955S045489
申请日期
1955.09.08
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
WENDT DR.-ING. ALFRED;GERIG DIPL.-ING. KARL
分类号
H04M3/36
主分类号
H04M3/36
代理机构
代理人
主权项
地址
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