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US Patent: 659,778
Lathe Chuck for Grinding Watch Crystals
Patentee: Amsa R. Weaver (exact or similar names) - Harvard, Clay County, NE USPTO Classifications: 451/384 Tool Categories: specialty machines : watchmaking machinery trade specific : watchmaker Assignees: None Manufacturer: Not known to have been produced Witnesses: L. G. Kempster F. A. Butler	Patent Dates: Applied: Apr. 02, 1900 Granted: Oct. 16, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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