B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
51/145, 57/23
B24D 7/00 (2006.01) B24D 99/00 (2010.01) B24D 18/00 (2006.01) B28D 1/18 (2006.01) E21B 10/56 (2006.01)
Patent
CA 1320644
A B S T R A C T An abrasive compact is provided which has a plurality of recesses which may take the form of grooves or holes formed in a major surface thereof. The recesses contain no solid material and serve as crack arrester formations.
610714
Mastrantonis Nicholas
Phaal Cornelius
de Beers Industrial Diamond Division (proprietary)
Gowling Lafleur Henderson Llp
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