US PATENT SUBCLASS 246 / 122 R
TRAIN-POSITION INDICATION


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

122 RTRAIN-POSITION INDICATION {3}
123  DF  .~> Automatic time recording
124  DF  .~> Train annunciators or indicators
122 A  DF  .~> Miniature model

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 246/122

(under the class definition) Systems and devices in which the train automatically indicates its position upon the line as by lights, indicators, moving diagrams, etc.

SEE OR SEARCH CLASS

116, Signals and Indicators, appropriate subclasses for miscellaneous nonelectrical signals.

235, Registers, appropriate subclasses for registering apparatus and systems.