| 发明名称 |
ABRASIVE COMPACTS |
| 摘要 |
An abrasive compact is provided which has a plurality of recesses which may take the form of holes (26) or grooves (20) formed in a major surface (10) thereof. The recesses contain no solid material and serve as crack arrester formations. |
| 申请公布号 |
EP0358526(A3) |
申请公布日期 |
1991.07.24 |
| 申请号 |
EP19890309139 |
申请日期 |
1989.09.08 |
| 申请人 |
DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED |
发明人 |
PHAAL, CORNELIUS;MASTRANTONIS, NICHOLAS |
| 分类号 |
B24D3/00;B24D7/00;B24D18/00;B24D99/00;B28D1/18;E21B10/56;E21B10/567;(IPC1-7):B24D17/00 |
主分类号 |
B24D3/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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