US PATENT SUBCLASS 246 / 133
.~.~ Electric locking

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

131  DF  INTERLOCKING {8}
132  DF  .~ Electric actuation {2}
133.~.~ Electric locking {2}
134  DF  .~.~.~> Route locking
135  DF  .~.~.~> Return-release indication

DEFINITION

Classification: 246/133

(under subclass 132) Subject matter having electrical means provided for actuating the locks.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15, 19, 25, 26, 106, 130, and 146, and appropriate indented subclasses under subclass 131, for various types of interlocking.