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发明名称
Method and means for tube making
摘要
申请公布号
US2008600(A)
申请公布日期
1935.07.16
申请号
US19340735054
申请日期
1934.07.13
申请人
WELLMAN SEAVER ROLLING MILL COMPANY LIMITED
发明人
SMITH SYDNEY
分类号
B21C1/30
主分类号
B21C1/30
代理机构
代理人
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