Specifications are presented as follows: time lock; electric lever lock; electric switch lock; wiring.


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    Title :

    Drawbridge circuit controller


    Additional title:

    Am. Ry. Assn. -- Signal Section Proc



    Publication date :

    1929


    Size :

    31 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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