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发明名称
ELECTRICAL RELAY
摘要
申请公布号
CA412639(A)
申请公布日期
1943.05.18
申请号
CAD412639
申请日期
申请人
THE UNION SWITCH AND SIGNAL COMPANY
发明人
NORMAN F. AGNEW
分类号
主分类号
代理机构
代理人
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地址
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