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发明名称
Arrangement for supplying alternating current power for actuating telephone subscriber's station equipment over the subscriber's loop circuit
摘要
申请公布号
US2713613(A)
申请公布日期
1955.07.19
申请号
US19520298036
申请日期
1952.07.10
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MALTHANER WILLIAM A.;VAUGHAN HENRY E.
分类号
H04M1/272;H04Q3/00
主分类号
H04M1/272
代理机构
代理人
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地址
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