US PATENT SUBCLASS 172 / 486
.~.~ Manual actuation coextensive with power

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

452  DF  WITH ACTUATOR ADAPTED TO LIFT TOOL FOR TRANSPORT ON WHEELED FRAME OR BROADLY CLAIMED IMPLEMENT {37}
485  DF  .~ Power actuator with manual adjusting or supplemental manual actuating means {2}
486.~.~ Manual actuation coextensive with power

DEFINITION

Classification: 172/486

(under subclass 485) Apparatus in which the means manipulable by the attendant is related to the power unit so that they

both are used simultaneously or selectively and the attendant manipulable means can move the earth working element over the same distance and between the same limits as the power means.