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经营范围
发明名称
ROERKOPLING
摘要
申请公布号
NO168384(B)
申请公布日期
1991.11.04
申请号
NO19850001445
申请日期
1985.04.11
申请人
CAMERON IRON WORKS INC
发明人
WALKER, STEPHEN J.
分类号
F16L37/08;E21B33/038;F16L37/00;F16L37/10;F16L37/138;(IPC1-7):F16L15/04;E21B17/02
主分类号
F16L37/08
代理机构
代理人
主权项
地址
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