US PATENT SUBCLASS 52 / 4
.~ With article or ground penetrating retainer

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

3  DF  ARTICLE OR MATERIAL SUPPORTED COVER {2}
4.~ With article or ground penetrating retainer

DEFINITION

Classification: 52/4

(under subclass 3) Structure including a feature which retains the cover and penetrates the ground or the article covered.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155+, for an earth piercing or expanding anchor.