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发明名称
Telephone pay station circuit
摘要
申请公布号
US2640107(A)
申请公布日期
1953.05.26
申请号
US19510220778
申请日期
1951.04.13
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
LOMAX CLARENCE E.;GALLAGHER RAY JOHN
分类号
H04M17/02
主分类号
H04M17/02
代理机构
代理人
主权项
地址
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