US PATENT SUBCLASS 451 / 225
.~.~.~.~.~ 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}
213  DF  .~.~.~.~ Rectilinear {6}
225.~.~.~.~.~ Harvester knife

DEFINITION

Classification: 451/225

Harvester knife:

(under subclass 213) 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, 230, 235, 349, 372+, and 421, for other inventions related to sharpening an agricultural blade (e.g., a mower or reaper knife).