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Summary

Description
English: Heat Engine, Oscillating motor
Date
Source US Patent US250821-Figure 1, https://www.google.com/patents/US250821
Author Patent: Israel L. Landis, Coloring: MichaelFrey (talk)

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User:MichaelFrey/US250821

Public domain The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)

The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.

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Date/TimeThumbnailDimensionsUserComment
current13:15, 14 October 2016Thumbnail for version as of 13:15, 14 October 20161,865 × 1,677 (672 KB)MichaelFrey{{Information |Description ={{en|1=Heat Engine, Oscillating motor}} |Source =US Patent US250821-Figure 1, https://www.google.com/patents/US250821 |Author = Patent: Israel L. Landis, Coloring: MichaelFrey ([[User...

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