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发明名称
ELECTRO-MAGNETIC RELAY
摘要
申请公布号
CA436879(A)
申请公布日期
1946.09.10
申请号
CAD436879
申请日期
申请人
NORTHERN ELECTRIC COMPANY
发明人
LOUIS W. DROEL
分类号
主分类号
代理机构
代理人
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地址
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