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经营范围
发明名称
ROERKOPLING.
摘要
申请公布号
NO873987(D0)
申请公布日期
1987.09.23
申请号
NO19870003987
申请日期
1987.09.23
申请人
CAMERON IRON WORKS INC
发明人
GALLE, GARY L.;BERNER, PAUL C. JR
分类号
E21B17/043;E21B17/02;E21B23/04;E21B33/038;E21B43/013;F16L37/00;(IPC1-7):F16L/
主分类号
E21B17/043
代理机构
代理人
主权项
地址
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