Illustration showing Elihu Thomson's CURRENT INDICATOR
Illustration showing Elihu Thomson's CURRENT INDICATOR (top). Bergmann's CURRENT IDNICATOR (bot) used in the Edison system. Paris, 1891
Picture No
13913061
Media ID
48378847
Size
3722px x 5634px
(10.1MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive































