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发明名称
PIPE JOINTS
摘要
申请公布号
GB2184807(B)
申请公布日期
1989.10.11
申请号
GB19860029775
申请日期
1986.12.12
申请人
THE * HEPWORTH IRON COMPANY LIMITED
发明人
JOHN BENJAMIN * GLOVER
分类号
E21B17/08;E21D11/08;E21D11/38;F16L21/02
主分类号
E21B17/08
代理机构
代理人
主权项
地址
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