British standard specification for thermal-type time-element relays (alternating or direct current) for railway signaling purposes.


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    Title :

    British standard specification for thermal-type time-element relays (alternating or direct current) for railway signaling purposes


    Additional title:

    Brit Standards Instn -- Standard Specification



    Publication date :

    1935


    Size :

    7 pages


    Type of media :

    Standard


    Type of material :

    Print


    Language :

    English