"Claude (Claudius) Honoré Désiré Dornier (born in Kempten im Allgäu on 14 May 1884 – 5 December 1969) was a German airplane designer and founder of ...
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Dornier GmbH. His notable designs include the 12-engine Dornier Do X flying boat, for decades the world's largest and most powerful airplane." - (en.wikipedia.org 22.05.2021)