(under the class definition) Systems and devices specially adapted for the control of train movements by train-orders or by their equivalents transmitted from a central or directing station.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting,
541+, for number-display devices and similar markers displayed on trains to indicate car or train numbers or give other information useful to the train-dispatcher or other officials.
116, Signals and Indicators,
30, for train-markers referred to above, and subclass 173 for flags used as train-markers and for supports for such flags. 178, Telegraphy, appropriate subclasses for miscellaneous electric telegraph systems.
258, Railway Mail Delivery, appropriate subclasses indented thereunder, for devices for delivering train-orders to moving trains.
340, Communications: Electrical,
825.72, for radio remote control.
362, Illumination,
253, and 459+ for signal and indicating lights carried by engines and cars, and 253, and 478+ for illuminated train and engine markers.
379, Telephonic Communications, appropriate subclasses for miscellaneous electric telephone systems.
455, Telecommunications,
500+, for miscellaneous radio systems comprising a plurality of transmitter and/or receiver means with a central control station.
