US PATENT SUBCLASS 246 / 224
.~.~ Home and distant signals
Current as of:
June, 1999
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246 /
HD
RAILWAY SWITCHES AND SIGNALS
218
DF
ELECTRIC ACTUATION
{9}
221
DF
.~ Motor systems {5}
224
.~.~ Home and distant signals
DEFINITION
Classification: 246/224
(under subclass 221) Subject matter especially adapted for the operation of two signals- a home and a distant-placed upon the same mast.
SEE OR SEARCH THIS CLASS, SUBCLASS:
33, 38, 39, 44, and 46+, for block-signaling systems having means for controlling home and distant signals.
481, for the home and distant semaphore, per se.