Patent Drawing of Engine - US390721 Public domain image
Summary
Public domain scan of technical drawing, 19th-20th-century, free to use, no copyright restrictions image - Picryl description
Nikola Tesla (1856–1943) Serbian American inventor and engineer who discovered and patented the rotating magnetic field, the basis of most alternating-current machinery. He also developed the three-phase system of electric power transmission. He immigrated to the United States in 1884 and sold the patent rights to his system of alternating-current dynamos, transformers, and motors to George Westinghouse.
Tags
Date
1900
Source
USPTO
Copyright info
public domain
