US PATENT SUBCLASS 172 / 755
.~.~ Heating or lubricating

Current as of: June, 1999
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172 /   HD   EARTH WORKING

681  DF  TOOL, STANDARD OR CONNECTION {32}
754  DF  .~ Share and furrow slice inverting moldboard {7}
755.~.~ Heating or lubricating

DEFINITION

Classification: 172/755

(under subclass 754) Apparatus including means to heat or add a lubricating material to the moldboard-type implement to facilitate the passage of earth thereover and reduce friction.

SEE OR SEARCH CLASS

37, Excavating,

200, and 227 for heated snow plows.