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发明名称
Apparatus for making tapered tubular workpieces
摘要
申请公布号
US2084333(A)
申请公布日期
1937.06.22
申请号
US19340759804
申请日期
1934.12.29
申请人
NATIONAL TUBE COMPANY
发明人
FINDLATER STEVENSON
分类号
B21B19/06;B21H7/00
主分类号
B21B19/06
代理机构
代理人
主权项
地址
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