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US Patent: 1,773,448
Tool Holder for Grindstones
Patentee: Charles E. Davidson (exact or similar names) - Clinton, Clinton County,, IL USPTO Classifications: 451/163, 451/213, 451/367, 451/377 Tool Categories: metalworking machines : grinders : sharpening machines : sharpening tool holders Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 25, 1927 Granted: Aug. 19, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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