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US Patent: 198,668
Improvement in Butchers' Steels
Patentee: William T. Nicholson (exact or similar names) - Providence, RI USPTO Classifications: 76/84, D8/90 Tool Categories: Assignees: Nicholson File Co. - Providence, RI Manufacturer: Not known to have been produced Witnesses: J. Knight Thomas F. Cosgrove	Patent Dates: Applied: Dec. 06, 1877 Granted: Dec. 25, 1877 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen. "Vintage Machinery" entry for W. T. Nicholson
Description: A butcher's steel with two opposite abrasive surfaces and two opposite smooth polishing or finishing surfaces.

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