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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb
摘要
申请公布号
DE958576(C)
申请公布日期
1957.02.21
申请号
DE1955S043714
申请日期
1955.04.29
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
VILLMANN WALTER
分类号
H04M3/523;H04Q3/00
主分类号
H04M3/523
代理机构
代理人
主权项
地址
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