US PATENT SUBCLASS 246 / 444
.~.~.~ Self-cleaning

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

415 R  DF  SWITCHES {21}
435 R  DF  .~ Point {8}
442  DF  .~.~ Tongue {2}
444.~.~.~ Self-cleaning

DEFINITION

Classification: 246/444

(under subclass 442) Subject matter having point switches usually of the tongue type, so designed as to automatically remove the accumulated dirt, which tends to obstruct their motion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

428, for snow-protecting point switches.