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发明名称
ROERKOBLING.
摘要
申请公布号
NO167321(B)
申请公布日期
1991.07.15
申请号
NO19850001124
申请日期
1985.03.21
申请人
VETCO OFFSHORE INDUSTRIES INC
发明人
PALLINI JR., JOSEPH WILLIAM;ROHWELLER, DAVID JEFFRY
分类号
E21B17/08;F16L37/088;(IPC1-7):F16L21/08;E21B17/02
主分类号
E21B17/08
代理机构
代理人
主权项
地址
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