Kortdüse (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Kortdüse" in German language version.

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espacenet.com

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Patent US2030375: Combined device of a ship's propeller enclosed by a nozzle. Angemeldet am 7. September 1933, veröffentlicht am 11. Februar 1936, Erfinder: Ludwig Kort.‌