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US Patent: 643,927
Drill-grinder
Patentee: Oakley S. Walker (exact or similar names) - Worcester, MA USPTO Classifications: 451/276, 451/375 Tool Categories: metalworking machines : grinders : sharpening machines : drill sharpening machines metalworking machines : grinders : drill grinders Assignees: None Manufacturer: O. S. Walker & Co. - Worcester, MA Witnesses: Pauline Winkler Rufus B. Fowler	Patent Dates: Applied: Nov. 21, 1899 Granted: Feb. 20, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for O. S. Walker & Co.

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