US PATENT SUBCLASS 172 / 559
.~.~ Rotatably mounted cleaning means

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

518  DF  ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30}
558  DF  .~ With disk cleaning means {6}
559.~.~ Rotatably mounted cleaning means

DEFINITION

Classification: 172/559

(under subclass 558) Apparatus in which the earth-removing means is supported for free rotation in position to remove accumulated soil from the platelike member.