US PATENT SUBCLASS 254 / 232
.~.~ Plural screws

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

199  DF  PORTABLE IMPLEMENTS OR APPARATUS FOR TENSIONING FLEXIBLE MATERIAL OR FOR EXTRACTING STUMPS OR POLES {12}
231  DF  .~ Including screw drive {4}
232.~.~ Plural screws {1}
233  DF  .~.~.~> Having plural, oppositely shifting, threaded riders

DEFINITION

Classification: 254/232

Plural screws:

(under subclass 231) Implements or apparatus including two or more distinct, threaded, cylindrical rods.