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US Patent: 222,386
Improvement in saw-sharpening machines
Patentee: William L. Covel (exact or similar names) - Beloit, WI USPTO Classifications: 76/43, 76/77, 76/79 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: None Manufacturer: Halladay, Litchfield & Co. - Chicago, IL Witnesses: Charles A. Pettit Solon C. Kemon	Patent Dates: Applied: Aug. 23, 1875 Granted: Dec. 09, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: Halladay, Litchfield & Co. licensed this patent in addition to Covel's earlier patent 172,092.

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