Gem grinding and polishing tool
United States Patent 2450984
US Patent References:
/1103698.html
- - 1103698
/1132882.html
- - 1132882
Gem grinding and polishing machine
- - 1331480
Diamond polishing and grinding device
- - 2382099
Instrument for grinding and polishing diamonds
- - 2383619
/1103698.html
- - 1103698
/1132882.html
- - 1132882
Gem grinding and polishing machine
- - 1331480
Diamond polishing and grinding device
- - 2382099
Instrument for grinding and polishing diamonds
- - 2383619
Inventors:
Alfredo, Pastore
Publication Date:
10/12/1948
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Assignee:
Alfredo, Pastore
Primary Class:
Other Classes:
248/904
International Classes:
B24B9/16; B24B9/06