Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1989-09-05
1991-12-17
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
63 32, A44C 1700, B23B 916
Patent
active
050725491
ABSTRACT:
A method of cutting facets on a gemstone to form a pentagonal shaped gem product such that the cut facets produce a five-legged star to appear beneath the gem table. The gem product produced by this method comprises a pavilion having thirty facets and fifty edges, a crown having twenty-one facets and thirty-five facets, and a five sided girdle.
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Garrison David L.
Griffiths Paul L.
Schmidt Frederick R.
Shideler Blynn
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