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发明名称
Corrugated tubing
摘要
申请公布号
US2864591(A)
申请公布日期
1958.12.16
申请号
US19560595343
申请日期
1956.07.02
申请人
CALUMET & HECLA, INC.
发明人
FRINK RUSSELL M.
分类号
F28F1/08
主分类号
F28F1/08
代理机构
代理人
主权项
地址
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