Describes carriers, receiver, transmitter, etc. of pneumatic mail tubes which were in use in Philadelphia, also automatic railway as substitute for automobiles running from Paddington to White-chapel, Lond., for carrying mail automatic control of trains.


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    Title :

    Pneumatic mail tubes and operation of automatic railroads


    Additional title:

    Engrs. Eng


    Contributors:

    Published in:

    Publication date :

    1922


    Size :

    7 pages


    Remarks:

    3 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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