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发明名称
Telephonograph adapted to be connected to the public telephone system
摘要
申请公布号
US2692915(A)
申请公布日期
1954.10.26
申请号
US19510205645
申请日期
1951.01.12
申请人
WILLY MULLER;HANS LABHART
发明人
MULLER WILLY;LABHART HANS
分类号
H04M1/65
主分类号
H04M1/65
代理机构
代理人
主权项
地址
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