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经营范围
发明名称
Polarized electromagnetic relay
摘要
申请公布号
US2435001(A)
申请公布日期
1948.01.27
申请号
US19450588749
申请日期
1945.04.17
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
FIELD OSCAR S.
分类号
H02H11/00
主分类号
H02H11/00
代理机构
代理人
主权项
地址
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