US PATENT SUBCLASS 172 / 230
.~.~ Independently operable

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

204  DF  ALTERNATING FOR RIGHT OR LEFT HAND OPERATION (OTHER THAN SCRAPER) {10}
228  DF  .~ Parallel separate tools {2}
230.~.~ Independently operable {1}
231  DF  .~.~.~> Power derived from ground wheel

DEFINITION

Classification: 172/230

(under subclass 228) Apparatus having separate operating means for each earth working element such that each element is movable to operative and inoperative positions independently of the other element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

304, for plural tools carried forward of the rear of a motor vehicle which are independently actuatable.

468+, for plural tools having independently operable actuator means to lift the tools for transport on a wheeled frame.