US PATENT SUBCLASS 172 / 4.5
.~ Land leveller type


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

2  DF  AUTOMATIC POWER CONTROL {5}
4.5.~ Land leveller type


DEFINITION

Classification: 172/4.5

(under subclass 2) Apparatus in which the earth working element is a ground leveling tool, (e.g., a scraper, etc.) which is so controlled that the contour of the finished portion of the earth which is being worked will be substantially straight in a longitudinal direction regardless of the irregularities of the original surface of said portion.