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US Patent: 41,646
Improved apparatus for grinding cutter-bits for rifling-machines
Patentee: Dwight Slate (exact or similar names) - Hartford, CT USPTO Classifications: 451/364, 451/555, 451/558 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Francis Fellowes, Jr. Francis Fellowes	Patent Dates: Granted: Feb. 16, 1864 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Dwight Slate Machine Co.

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