US PATENT SUBCLASS 172 / 778
.~ Tool supporting clamp means engage upper and lower edges

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

777  DF  SCRAPER SUPPORTS NARROW DEPENDING TOOL {1}
778.~ Tool supporting clamp means engage upper and lower edges

DEFINITION

Classification: 172/778

(under subclass 777) Apparatus in which the earth working tool is attached to the scraper by means at the top and bottom edges of the scraper acting to clamp the tool to the scraper.