US PATENT SUBCLASS 172 / 378
.~.~ Plural prongs, teeth or serrations

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

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
371  DF  .~ Hand tool {6}
378.~.~ Plural prongs, teeth or serrations {2}
379  DF  .~.~.~> Plural rows
380  DF  .~.~.~> Made from sheet material

DEFINITION

Classification: 172/378

(under subclass 371) Apparatus wherein the earth working means comprises a plurality of prongs, teeth, or serratins arranged to simultaneously contact the earth.

SEE OR SEARCH CLASS

56, Harvesters,

400.01+, for hand rakes, particularly subclasses 400.04+ for rakes combined with earth working elements. A hand rake as distinguished from an earth working tool, is usually an implement having flexible teeth or rigid teeth with the width of the rigid tooth carrying portion width or diameter of the handle; i.e., at least ten times as large.

254, Implements or Apparatus for Applying Pushing or Pulling Force,

131+, and for forks and shovels with fulcrum means to aid in the pulling of weeds from the ground. 294, Handling: Hand and Hoist-Line Implements,

50.5, and 50.6+ for hand implements having a handle and a blade or tines extending the general direction of the handle with grappling means.