US PATENT SUBCLASS 37 / 271
.~.~.~ For adjusting height of 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}
266  DF  .~ Scraper blade {5}
270  DF  .~.~ Mounted on surface contacting support or guide {1}
271.~.~.~ For adjusting height of blade

DEFINITION

Classification: 37/271

For adjusting height of blade:

(under subclass 270) Apparatus wherein the moldboard can be adjusted to a plurality of elevations above the support means.