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发明名称
Prod
摘要
申请公布号
US2292236(A)
申请公布日期
1942.08.04
申请号
US19410374323
申请日期
1941.01.14
申请人
MARTIN CARL P
发明人
MARTIN CARL P.
分类号
G01R1/067
主分类号
G01R1/067
代理机构
代理人
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