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经营范围
发明名称
PIPE JOINT
摘要
申请公布号
CS8607725(A3)
申请公布日期
1992.02.19
申请号
CS19860007725
申请日期
1986.10.24
申请人
SANDVIK AB
发明人
WESTBERG TORSTEN ALVAR
分类号
E21B17/042;F16L15/04;F16L17/06;(IPC1-7):F16L15/00;F16L17/00;F16L21/00
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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