US PATENT SUBCLASS 172 / 106
.~.~ Belt or chain drive

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
105  DF  .~ Driven from rolling or driven ground wheel {1}
106.~.~ Belt or chain drive

DEFINITION

Classification: 172/106

(under subclass 105) Apparatus in which the drive interposed between the earth working element and a wheel includes an endless flexible force transmitting member.