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发明名称
Telephone system trouble recorder
摘要
申请公布号
US2350466(A)
申请公布日期
1944.06.06
申请号
US19420464074
申请日期
1942.10.31
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
KING GERALD V.;MYERS OSCAR
分类号
H04M3/08
主分类号
H04M3/08
代理机构
代理人
主权项
地址
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