System installed by Pennsylvania Railroad in Pittsburgh terminal area, enables train director to watch switching operations at post office, which is out of sight behind railroad's terminal building.


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    Titel :

    TV watches switching operations


    Weitere Titelangaben:

    Ry Signaling Communications


    Erschienen in:

    Erscheinungsdatum :

    1954


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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