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发明名称
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摘要
申请公布号
US2231218(A)
申请公布日期
1941.02.11
申请号
US19390256042
申请日期
1939.02.13
申请人
J. H. JOCHUM, JR.
发明人
PALMER WALTER E.
分类号
H01H19/12
主分类号
H01H19/12
代理机构
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