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发明名称
Tubo con aletas de una pieza.
摘要
申请公布号
ES14698(U)
申请公布日期
1947.04.16
申请号
ES19980000146U
申请日期
1947.03.20
申请人
CALUMET AND HECLA CONSOLIDATED COPPER COMPANY
发明人
分类号
主分类号
代理机构
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