US PATENT SUBCLASS 246 / 473.1
.~ Highway crossing


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

473 R  DF  SIGNALS {12}
473.1.~ Highway crossing {1}
473.2  DF  .~.~> Wigwag type


DEFINITION

Classification: 246/473.1

Highway crossing:

(under subclass 473) Subject matter including devices which indicate to pedestrians or highway vehicle operators that a train is approaching a highway crossing.

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125+, for systems which control highway crossing indicators by automatic train actuation.

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340, Communications: Electrical,

928, for traffic control systems or devices of a similar nature used in other than a railroad crossing context.