February 23 – Rudolf Diesel receives a patent for the diesel engine. In this year he also publishes his treatise Theorie und Konstruktion eines rationellen Wärmemotors zum Ersatz der Dampfmaschine und der heute bekannten Verbrennungsmotoren.
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^Acheson, G. (1893) U.S. patent 492,767Production of artificial crystalline carbonaceous material.
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^Meehan, Patrick. "The Big Wheel". Hyde Park Historical Society. Archived from the original on 2013-01-18. Retrieved 2011-10-20.
^Sass, Friedrich (1962). Geschichte des deutschen Verbrennungsmotorenbaus von 1860 bis 1918. Berlin; Heidelberg: Springer. p. 435. ISBN 978-3-662-11843-6.
^Diesel, Rudolf (1913). Die Entstehung des Dieselmotors. Berlin: Springer. p. 13. ISBN 978-3-642-64940-0.
^"Η αντίστροφη μέτρηση". Διώρυγα Κορίνθου. 2009. Archived from the original on 2012-03-28. Retrieved 2012-11-06.
^Engineering News29 (16 February 1893) pp. 162–163.
^Bierley, Paul E. (2006). The Incredible Band of John Philip Sousa. Champaign: University of Illinois Press. pp. 55–. ISBN 978-0-252-03147-2.
^"Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved 23 July 2020.