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发明名称
Forbedret röravstengerprofil for selvjusterende pakningsavstenger i en boresikringsventil av avstengningstypen
摘要
申请公布号
NO20013240(D0)
申请公布日期
2001.06.28
申请号
NO20010003240
申请日期
2001.06.28
申请人
COOPER CAMERON CORP
发明人
WATTS, GERALD D
分类号
E21B33/06;(IPC1-7):E21B
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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