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发明名称
COLD DRAWING SEAMLESS METAL TUBES HAVING UPSET PORTIONS
摘要
申请公布号
AU639887(B2)
申请公布日期
1993.08.12
申请号
AU19880014729
申请日期
1988.04.18
申请人
SANWA KOKAN CO. LTD.
发明人
YUTAKA SUNAGA;TOSHIO SAKURAI
分类号
B21C1/24
主分类号
B21C1/24
代理机构
代理人
主权项
地址
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