US PATENT SUBCLASS 292 / 251
.~ Screw

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

Internet Version by PATENTEC © 1999      Terms of Use


292 /   HD   CLOSURE FASTENERS

2  DF  BOLTS {15}
251.~ Screw

DEFINITION

Classification: 292/251

(under subclass 2) Devices which are screw- threaded for engaging screw-threaded keepers.