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US Patent: 78,909
Sharpening Mowing-Machine Knives
Patentees:
George P. York - Westfield, Chautauqua County, NY
William H. Wilson - Westfield, Chautauqua County, NY

USPTO Classifications:
451/279

Tool Categories:
metalworking machines : grinders : sharpening machines
agricultural machines : sharpeners

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jun. 16, 1868

Patent Pictures:
USPTO pdf tiff
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