US PATENT SUBCLASS 254 / 85
.~ Screw

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

84  DF  TRAVERSING JACK {1}
85.~ Screw

DEFINITION

Classification: 254/85

Screw:

(under subclass 84) Traversing jack in which either the lifting or the traversing, or both, are performed by screw mechanism.