US PATENT SUBCLASS 172 / 379
.~.~.~ Plural rows

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}
379.~.~.~ Plural rows

DEFINITION

Classification: 172/379

(under subclass 378) Apparatus wherein the earth working means comprises a plurality of earth working members arranged in a plurality of rows to simultaneously engage and work an area of the surface of the earth.