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发明名称
ELECTRIC SWITCH
摘要
申请公布号
CA385674(A)
申请公布日期
1939.12.12
申请号
CAD385674
申请日期
申请人
NORTHERN ELECTRIC COMPANY;AUTOMATIC SIGNAL CORPORATION
发明人
HARRY A. WILCOX, JR.
分类号
主分类号
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代理人
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