Gray Line Sight Seeing Co of Chicago, Ill, installed 20 prototype systems in fleet operation; no shielded cables, ignition suppressors, or shock mounts required; unit is hermetically sealed from damage from moisture and temperature; system carrying trade name "Mobilfone" functions without conventional vacuum tubes.


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    Titel :

    Public address system for buses


    Weitere Titelangaben:

    Bus Transportation


    Beteiligte:
    Delp, L. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1955


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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