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发明名称
Einrichtung zur Beschraenkung der Waehlmoeglichkeit an einem Fernsprechapparat
摘要
申请公布号
DE1167394(B)
申请公布日期
1964.04.09
申请号
DE1963K049584
申请日期
1963.04.26
申请人
WILHELM KLEFFNER
发明人
KLEFFNER WILHELM
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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