US PATENT SUBCLASS 172 / 469
.~.~ By single selectively connectable actuator

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}
468  DF  .~ Plural tools, independently actuatable {3}
469.~.~ By single selectively connectable actuator

DEFINITION

Classification: 172/469

(under subclass 468) Apparatus in which the actuating means is a single actuator alternately connectable to each earth

working element to lift it independently of the others.