US PATENT SUBCLASS 254 / 20
.~ Screw

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

18  DF  NAIL EXTRACTOR TYPE {3}
20.~ Screw

DEFINITION

Classification: 254/20

Screw:

(under subclass 18) Implement of the nail extractor type including screw and nut mechanism for moving the nail-engaging member to extract the nail.

SEE OR SEARCH THIS CLASS, SUBCLASS:

100, and see the search notes thereunder.

231+, for implement or apparatus for extracting stumps or poles including a screw drive for moving the stump-engaging member.