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经营范围
发明名称
Abrasive body.
摘要
申请公布号
ZA200100476(B)
申请公布日期
2002.02.20
申请号
ZA20010000476
申请日期
2001.01.17
申请人
DE BEERS INDUSTRIAL DIAMONDS DIVISION (PROPRIETARY) LIMITED
发明人
KLAUS TANK;ROY DERRICK ACHILLES
分类号
E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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