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发明名称
Percussion rock bit
摘要
申请公布号
SG72194(G)
申请公布日期
1994.11.25
申请号
SG19940000721
申请日期
1994.06.03
申请人
SMITH INTERNATIONAL INC
发明人
HALL DAVID RICHARD
分类号
B32B18/00;B01J;B22F7/06;B23D5/00;B23P;B24D;B24D3/00;B24D3/06;B32B15/01;C01B;C04B35/52;C04B37/00;C22C;E21B;E21B10/56;E21B10/567;(IPC1-7):E21B10/56
主分类号
B32B18/00
代理机构
代理人
主权项
地址
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