File:Bourke Eninge four Cylinder.png

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Description
English: Bourke engine
Deutsch: Kurbelschlaufenmotor
Date (stitched together on 13 February 2015, 21:33 UTC)
Source https://www.google.com/patents/US2172670
Author Russell L. Bourke
Stiched to gether: MichaelFrey (talk)
Permission
(Reusing this file)
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}}.

Other versions File:US2172670- Figure 2.png

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current21:33, 13 February 2015Thumbnail for version as of 21:33, 13 February 20153,104 × 3,016 (1.15 MB)MichaelFrey{{Information |Description={{en|Bourke engine}}{{de|Kurbelschlaufenmotor}} |Source=https://www.google.com/patents/US2172670 |Date= 12. Mai 1936<br />Stiched to gether: ~~~~~ |Author= Russell L. Bourke<br />Stiched to gether: ~~~ |Permission={{PD-US-pat...

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