ES111861A3 - Mejoras en las paletas de las ruedas de hélice para propulsores, ventiladores, turbinas, bombas, molinos de viento o análogos.
- Google Patents
Mejoras en las paletas de las ruedas de hélice para propulsores, ventiladores, turbinas, bombas, molinos de viento o análogos.
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ES111861A1929-03-121929-03-12Mejoras en las paletas de las ruedas de hélice para propulsores, ventiladores, turbinas, bombas, molinos de viento o análogos.
ExpiredES111861A3
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