US PATENT SUBCLASS 246 / 463
.~ Bolted

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

Internet Version by PATENTEC © 1999      Terms of Use


246 /   HD   RAILWAY SWITCHES AND SIGNALS

454  DF  CROSSINGS, FROGS, AND MATES {11}
463.~ Bolted

DEFINITION

Classification: 246/463

(under subclass 454) Subject matter having crossings, frogs, and mates built up from rail-pieces spaced by filler-blocks and secured by bolts passing through the fillers and through the webs of the rails.