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摘要
申请公布号
US2142098(A)
申请公布日期
1939.01.03
申请号
US19370164192
申请日期
1937.09.16
申请人
ART METAL CONSTRUCTION COMPANY
发明人
FINCH RAYMOND C.
分类号
B42F17/18
主分类号
B42F17/18
代理机构
代理人
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