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发明名称
Einrichtung zur Sperrung der Rufnummer von bestimmten Verbindungen, insbesondere fuer Fernsprechanlagen
摘要
申请公布号
DE961107(C)
申请公布日期
1957.04.04
申请号
DE1954D018468
申请日期
1954.08.19
申请人
DEUTSCHE FERNSPRECHER GESELLSCHAFT M.B.H.
发明人
GERKE HORST
分类号
H04Q3/62
主分类号
H04Q3/62
代理机构
代理人
主权项
地址
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