US PATENT SUBCLASS 451 / 230
.~.~.~.~ Harvester knife

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
177  DF  .~ Rotary tool {3}
178  DF  .~.~ Rotary cylinder {11}
212  DF  .~.~.~ Reciprocating work holder {4}
230.~.~.~.~ Harvester knife

DEFINITION

Classification: 451/230

Harvester knife:

(under subclass 212) 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:

122, 128, 225, 235, 349, 372+, and 421+ for other inventions related to sharpening an agricultural blade (e.g., mower or reaper knife).