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发明名称
Gummi-klinking av stöpte deler
摘要
申请公布号
NO942956(A)
申请公布日期
1995.02.10
申请号
NO19940002956
申请日期
1994.08.09
申请人
HYDRIL CO
发明人
YOUNG, KENNETH D.;SIMONS, STEPHEN P.
分类号
E21B33/06;(IPC1-7):E21B33/06
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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