US PATENT SUBCLASS 246 / 24
.~.~.~ Circuit controllers

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}
24.~.~.~ Circuit controllers

DEFINITION

Classification: 246/24

(under subclass 22) Systems in which use is made of train-actuated circuit controllers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72, through 80, 82-84, 88, 90, 91, 126, 127, 246-252 and 259, for train-actuated circuit-closers. See also search mote to subclass 246.