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发明名称
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摘要
申请公布号
US2116675(A)
申请公布日期
1938.05.10
申请号
US19360086034
申请日期
1936.06.19
申请人
FRANK WILLIAM H;MESSING JOSEPH A
发明人
FRANK WILLIAM H.;MESSING JOSEPH A.
分类号
H01H23/14
主分类号
H01H23/14
代理机构
代理人
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