US PATENT SUBCLASS 37 / 257
.~.~ Screw-type auger

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


37 /   HD   EXCAVATING

196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
244  DF  .~ Motorized rotary excavating tool {8}
257.~.~ Screw-type auger {1}
258  DF  .~.~.~> Having plural vane segments

DEFINITION

Classification: 37/257

Screw-type auger:

(under subclass 244) Apparatus wherein the implement

comprises a helical vane means arranged to rotate upon its axis.

SEE OR SEARCH CLASS

198, Conveyors: Power-Driven,

657+, for a screw-type conveyor, per se.