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经营范围
发明名称
Electrically forming tubes
摘要
申请公布号
US2345692(A)
申请公布日期
1944.04.04
申请号
US19430471750
申请日期
1943.01.08
申请人
A. O. SMITH CORPORATION
发明人
WESTIN SVEN;WESTIN AXEL
分类号
B21D53/78
主分类号
B21D53/78
代理机构
代理人
主权项
地址
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