Symbols are limited to apparatus usually encountered in electrical engineering and construction of all classes of electric traction, such as electrical equipment of electrically operated cars and locomotives, etc. (See also Am Inst Elec Engrs -- Report n 17g5 Dec 1931 20 p)
Report on standards for graphical symbols used for electric traction including railway signaling
Mech Eng
Mechanical Engineering ; 54 , n 7
1932
Article (Journal)
English
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Report on standards for graphical symbols used for electric traction including railway signaling
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