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发明名称
Improvements in electric contact relays
摘要
申请公布号
GB510566(A)
申请公布日期
1939.08.03
申请号
GB19380011611
申请日期
1938.04.14
申请人
WILLY POPP
发明人
分类号
H01H53/015
主分类号
H01H53/015
代理机构
代理人
主权项
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