US PATENT SUBCLASS 246 / 439
.~.~ Tandem

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}
439.~.~ Tandem

DEFINITION

Classification: 246/439

(under subclass 435) Subject matter having point switches in which one point is placed in advance of the other.

(1) Note. These switches are known in the art as the "Vaughn" type, from the name of the inventor.