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US Patent: 494,715
Device for Polishing Precious Stones
Patentee: Isaac Grasset (exact or similar names) - Geneva, Geneva Canton, Switzerland USPTO Classifications: 451/262, 451/269, 451/324 Tool Categories: specialty machines : polishing and buffing machinery trade specific : watchmaker Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 10, 1892 Granted: Apr. 04, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: Patented in Switzerland, 09 Apr., 1892, #4,873.

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