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发明名称
POLARIZED RELAY
摘要
申请公布号
CA431424(A)
申请公布日期
1945.11.20
申请号
CAD431424
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED;BELL TELEPHONE LABORATORIES
发明人
EMIL DICKTEN, JR.
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主分类号
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