US PATENT SUBCLASS 37 / 254
.~.~.~ Including screw-type auger

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  DF  .~.~ Fed by scraper blade {2}
254.~.~.~ Including screw-type auger {1}
255  DF  .~.~.~.~> Augers on separate shafts

DEFINITION

Classification: 37/254

Including screw-type auger:

(under subclass 253) Apparatus wherein the implement comprises a helical vane means arranged to rotate upon its axis.