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发明名称
Fernsprechnummernschalter mit Sperrung bestimmter Anfangsziffern
摘要
申请公布号
DE924458(C)
申请公布日期
1955.03.03
申请号
DE1953S032238
申请日期
1953.02.19
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
SCHULZE GERHARD
分类号
H04M1/677
主分类号
H04M1/677
代理机构
代理人
主权项
地址
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