US PATENT SUBCLASS 451 / 122
.~.~.~.~ Harvester knife

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
119  DF  .~ Rotary reciprocating tool {2}
120  DF  .~.~ Cylindrical tool {2}
121  DF  .~.~.~ Oscillating {2}
122.~.~.~.~ Harvester knife

DEFINITION

Classification: 451/122

Harvester knife:

(under subclass 121) Abrading machine especially adapted for sharpening the cutting edge of a member intended to be used in gathering agricultural produce.

SEE OR SEARCH THIS CLASS, SUBCLASS:

128, 225, 230, 235, 349, 372+, and 421, for other inventions related to sharpening an agricultural blade (e.g., a mower or reaper knife).