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Diedrich Uhlhorn : ウィキペディア英語版 | Diedrich Uhlhorn
Diedrich Uhlhorn ( * 3 June 1764 in Bockhorn; 1837 in Grevenbroich) was a German engineer. == Life == Uhlhorn was an engineer, mechanic and inventor, who invented in 1817 the first mechanical tachometer. Between 1817 and 1830 he was inventor of the Presse Monétaire (level coin press known as Uhlhorn Press) which bears his name. He was married.
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