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经营范围
发明名称
SURFACE HARDENING OF DRILL ROD COUPLING
摘要
申请公布号
IE852249(L)
申请公布日期
1986.03.13
申请号
IE19850002249
申请日期
1985.09.12
申请人
SAIPEM S.P.A.
发明人
分类号
C21D1/09;(IPC1-7):C21D1/09
主分类号
C21D1/09
代理机构
代理人
主权项
地址
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