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发明名称
Ledekule
摘要
申请公布号
NO20010574(A)
申请公布日期
2001.02.02
申请号
NO20010000574
申请日期
2001.02.02
申请人
SMITH INTERNATIONAL INC
发明人
MCGARIAN, BRUCE;GILLIES, IAN
分类号
E21B7/06;E21B7/08;(IPC1-7):E21B7/06
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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