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HAUSSNER KONRAD
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HAUSSNER KONRAD
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ES46340A1909-09-171909-09-17Un mecanismo para graduar la velocidad de avance en las piezas de artillería de retroceso diferencial.
ExpiredES46340A1
(es)
Una modificación en los propulsores de hélices para los buques de vapor consiguiendo con dicha mejora aumentar la velocidad de los mismos en un diez por ciento.