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发明名称
Method of and means for rolling seamless tubing
摘要
申请公布号
GB393636(A)
申请公布日期
1933.06.07
申请号
GB19310025102
申请日期
1931.09.07
申请人
PEHR ALFRED FOREN
发明人
分类号
B21B17/04
主分类号
B21B17/04
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