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发明名称
Method of rifling metal tubes
摘要
申请公布号
US2708306(A)
申请公布日期
1955.05.17
申请号
US19520297827
申请日期
1952.07.09
申请人
HUGHES TOOL COMPANY
发明人
LAMPTON GLEN T.
分类号
B21C37/26
主分类号
B21C37/26
代理机构
代理人
主权项
地址
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