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摘要
申请公布号
US2291237(A)
申请公布日期
1942.07.28
申请号
US19400365547
申请日期
1940.11.13
申请人
KILGOUR WALTER M S
发明人
KILGOUR WALTER M. S.
分类号
H01H29/22
主分类号
H01H29/22
代理机构
代理人
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