(under subclass 104) Subject matter having signals either actuated or controlled by electric means or having electricity used for performing some function other than transmitting telephonic or code messages to the signalmen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22+, for electromanual systems automatically controlled by the trains or cars.
104, for systems which are otherwise manual and which use electrical means for the purposes of communication between signalmen in cabins. Also see search notes appended thereto.
