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发明名称
Method and apparatus for making tubular members
摘要
申请公布号
US2217985(A)
申请公布日期
1940.10.15
申请号
US19390295234
申请日期
1939.09.16
申请人
THE NATIONAL SUPPLY COMPANY
发明人
KLUG HARRY J.
分类号
B21D5/12
主分类号
B21D5/12
代理机构
代理人
主权项
地址
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