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发明名称
FINNED TUBING
摘要
申请公布号
IE28984(L)
申请公布日期
1966.06.28
申请号
IE19650000550
申请日期
1965.06.03
申请人
CALUMET & HECLA CORP.
发明人
分类号
(IPC1-7):B21D15/08
主分类号
(IPC1-7):B21D15/08
代理机构
代理人
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地址
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