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Class Information
Number: 451/128
Name: Abrading > Machine > Rotary reciprocating tool > Cylindrical tool > Rectilinear > Harvester knife
Description: Abrading machine especially adapted for sharpening the cutting edge of a member intended to be used in gathering agricultural produce.

Patents under this class:

Patent Number Title Of Patent Date Issued
7503835 Lawnmower blade sharpener Mar. 17, 2009
6942553 Portable automated sharpening apparatus for an operational reel blade mechanism Sep. 13, 2005
6171176 Method of effecting a precision saw-toothed grinding on the surface of a given workpiece Jan. 9, 2001
4557074 Method and apparatus for grinding undulate cutting edges of knives in tobacco cutting machines Dec. 10, 1985

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