Five electropneumatic interlockers and 79 color-light signal is installed in record time.


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    Title :

    Signaling of the Frankford elevated


    Additional title:

    Ry. Signal Engr


    Published in:

    Publication date :

    1923


    Size :

    6 pages


    Remarks:

    8 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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