US PATENT SUBCLASS 411 / 387.5
.~.~.~ Having distinct, spaced cutting edges or points (e.g., prongs)


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

Internet Version by PATENTEC © 1999      Terms of Use



411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

378  DF  EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. {16}
386  DF  .~ Pilot end having means enhancing fastening or installation {1}
387.1  DD  .~.~ Drill-tip-type end {5}
387.5.~.~.~ Having distinct, spaced cutting edges or points (e.g., prongs)