Report of Board of Examiners on the exhibits at the Philadelphia Exhibition. Three systems reported on, being those of the Union Switch and Signal Co., the Hall System and the Putnam System. All these most clearly and fully described, with many cuts. (Supplement)


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    Title :

    Electrical apparatus of railroad signals


    Additional title:

    Jour Frank Inst



    Publication date :

    1886


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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