US PATENT SUBCLASS 37 / 250
.~.~.~.~ Augers on separate shafts

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}
248  DF  .~.~ Diverse multistage rotary tools or tool portions (e.g., feeding and throwing, etc.) {1}
249  DF  .~.~.~ Including screw-type auger for first stage {2}
250.~.~.~.~ Augers on separate shafts

DEFINITION

Classification: 37/250

Augers on separate shafts:

(under subclass 249) Apparatus including a plurality of shafts carrying helical vane means.