US PATENT SUBCLASS 172 / 380
.~.~.~ Made from sheet material

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  DF  .~.~ Plural prongs, teeth or serrations {2}
380.~.~.~ Made from sheet material

DEFINITION

Classification: 172/380

(under subclass 378) Apparatus wherein a plurality of prongs, teeth, or serrations are formed from a single sheet of material.