Holding means for gem stones

Details Holding means for gem stones Holding means for gem stones

1977-07-25

1978-09-05

Whitehead, Harold D.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51216LP, 51235, 269 21, B24B 1300, B24B 700

Patent

active

041109376

ABSTRACT:
Apparatus for holding gem stones during machining, grinding and the like employing a chucking device utilizing a combination of vacuum and adhesive means to provide a firm holding means for the gem.

REFERENCES:
patent: 2437436 (1948-03-01), Mullen
patent: 3134208 (1964-05-01), Richmond
patent: 3461622 (1969-08-01), Rayford
patent: 3834085 (1974-09-01), Moeller
patent: 3962833 (1976-06-01), Johnson

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