US PATENT SUBCLASS 172 / 548
.~.~ Tooth or blade units on single axle

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

518  DF  ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30}
540  DF  .~ Tool has circumferentially spaced teeth, tines, blades or the like {13}
548.~.~ Tooth or blade units on single axle {1}
549  DF  .~.~.~> Tooth or blade units angularly adjustable on axle

DEFINITION

Classification: 172/548

(under subclass 540) Apparatus in which there are a plurality of tooth, tine, or blade units side by side on a common shaft or axle, each unit comprising at least one blade, tooth, or tine and a hub portion.