Improvements in electric mine railroads; new designs of storage-battery and trolley-type locomotives; current collectors; trolley suspension; locomotive headlights; controllers; stopping equipment for locomotives; electric rail joints of German make.
Improvements in electric mine railroads
Neuerungen an elektrischen Grubenbahnen
Elektrizitaet im Bergbau ; 8 , n 5
1933
9 pages
Illustrations
Article (Journal)
German
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