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Class Information
Number: 451/122
Name: Abrading > Machine > Rotary reciprocating tool > Cylindrical tool > Oscillating > 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
6561885 Ring cutter for cutting chips May. 13, 2003
6558237 Knife ring machining tool for machining chips May. 6, 2003
4718198 Apparatus for grinding cutting edges of knives in tobacco cutting machines Jan. 12, 1988

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