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经营范围
发明名称
ABRASIVE BODY
摘要
申请公布号
EP1095203(B1)
申请公布日期
2003.10.08
申请号
EP19990929618
申请日期
1999.07.01
申请人
ELEMENT SIX (PTY) LIMITED
发明人
TANK, KLAUS;ACHILLES, ROY DERRICK
分类号
E21B10/56;E21B10/573;(IPC1-7):E21B10/56
主分类号
E21B10/56
代理机构
代理人
主权项
地址
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