File:Iron-Clad-Electromagnet-David-Perret.png

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Description
English: Illustration from the patent application for the Iron Clad Electromagnet, invented by David Parret and processed in Einstein's Bern Patent Office.
Date
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Original publication: https://patents.google.com/patent/US771323A/en?inventor=David+Perret

Immediate source: https://patents.google.com/patent/US771323A/en?inventor=David+Perret
Author

David Perret

(Life time: 1860-1920)
Permission
(Reusing this file)		 This is a patent from 1904


Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Iron-Clad-Electromagnet-David-Perret.png

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current18:20, 26 June 2018Thumbnail for version as of 18:20, 26 June 2018882 × 1,228 (326 KB)Lester-bangbangs (talk | contribs){{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|Illustration from the patent application for the Iron Clad Electromagnet, invented by David Parret and processed in Einstein's Bern Patent Office. }} |Source = '''Original publication''': https://patents.google.com/patent/US771323A/en?inventor=David+Perret<br/> '''Immediate source''': https://patents.google.com/patent/US771323A/en?inventor=David+Perret |Date = 1904 |Author = David Perret<br/> (Life time: 1860-1920) |P...

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