File:Page 1 of Nicolaus Otto's patent for "Otto Cycle" engine.gif

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Copyright holder - Victor van Poppelen (User:Victorvp)

Page 1 of Nicolaus Otto's patent for his "Otto Cycle" engine.

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current21:26, 21 October 2005Thumbnail for version as of 21:26, 21 October 2005670 × 1,024 (51 KB)Victorvp (talk | contribs)Copyright holder - Victor van Poppelen (User:Victorvp) Page 1 of Nicolaus Otto's patent for his "Otto Cycle" engine.
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