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发明名称
High-strength high-toughness matrix bit bodies
摘要
申请公布号
GB0701738(D0)
申请公布日期
2007.03.07
申请号
GB20070001738
申请日期
2007.01.30
申请人
SMITH INTERNATIONAL INC
发明人
分类号
主分类号
代理机构
代理人
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