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发明名称
Multiplex electric communication system
摘要
申请公布号
US2740839(A)
申请公布日期
1956.04.03
申请号
US19470756262
申请日期
1947.06.21
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
CHATTERJEA PRAFULLA KUMAR;REEVES ALEC HARLEY
分类号
H04J3/00
主分类号
H04J3/00
代理机构
代理人
主权项
地址
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