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发明名称
Method of making integral external and internal finned tubing
摘要
申请公布号
US2463997(A)
申请公布日期
1949.03.08
申请号
US19440541002
申请日期
1944.06.19
申请人
CALUMET AND HECLA CONSOLIDATED COPPER COMPANY
发明人
RODGERS JAMES S.
分类号
B21C37/20;F28F1/42
主分类号
B21C37/20
代理机构
代理人
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地址
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