US PATENT SUBCLASS 246 / 123
.~ Automatic time recording

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

122 R  DF  TRAIN-POSITION INDICATION {3}
123.~ Automatic time recording

DEFINITION

Classification: 246/123

(under subclass 122) Systems in which a permanent record is automatically made at a distant station of the time at which a train passes a given point.

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4, 5 and 108+, for automatic-signal or time indication.

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346, Recorders, appropriate subclass.