Specifications of patents relating to dynamos, motors, etc. ...

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Corporate Author: United States. Patent Office
Language(s): English
Published: Washington, 1852-1893.
Note: A collection made by the Commonwealth Edison Company, Chicago.
Physical Description: 7 v. diagrs. 28 cm.
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Item Link	Original Source
Full view c.1 1852-80	University of Chicago
Full view c.1 1893	University of Chicago

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