US PATENT SUBCLASS 37 / 253
.~.~ Fed by scraper blade

Current as of: June, 1999
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37 /   HD   EXCAVATING

196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
244  DF  .~ Motorized rotary excavating tool {8}
253.~.~ Fed by scraper blade {2}
254  DF  .~.~.~> Including screw-type auger {1}
256  DF  .~.~.~> Including centrifugal impeller

DEFINITION

Classification: 37/253

Fed by scraper blade:

(under subclass 244) Apparatus wherein snow or ice is directed to the rotating implement by a transversely extending, generally vertically disposed moldboard.

SEE OR SEARCH THIS CLASS, SUBCLASS:

267+, for a scraper blade, per se.