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发明名称
Bowed crests for milled tooth bits
摘要
申请公布号
GB2378720(B)
申请公布日期
2004.05.05
申请号
GB20020019148
申请日期
2002.08.16
申请人
* SMITH INTERNATIONAL INC
发明人
AMARDEEP * SINGH
分类号
E21B10/16;E21B10/52;(IPC1-7):E21B10/16
主分类号
E21B10/16
代理机构
代理人
主权项
地址
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