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经营范围
发明名称
Finned tube
摘要
申请公布号
US2355621(A)
申请公布日期
1944.08.15
申请号
US19410386503
申请日期
1941.04.02
申请人
BROWN FINTUBE CO.
发明人
JR. JOHN W. BROWN,
分类号
B21C37/22;B23K11/00;F28F1/10;F28F1/20
主分类号
B21C37/22
代理机构
代理人
主权项
地址
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