US PATENT SUBCLASS 246 / 23
.~.~.~ Cab signal or train control

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

20  DF  BLOCK-SIGNAL SYSTEMS {4}
21  DF  .~ Semi-automatic {1}
22  DF  .~.~ Electromanual {3}
23.~.~.~ Cab signal or train control

DEFINITION

Classification: 246/23

(under subclass 22) Systems in which means are provided for actuating audible or visual signals upon the cab or train or for stopping it or controlling its speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167+, and all subclasses mentioned in the search notes appended thereto, for cab and control features.