ES156615A3 - Aparato variador de la intensidad del fluido electrico, para usos diversos, y particularmente regular la velocidad de los electromotores
- Google Patents
Aparato variador de la intensidad del fluido electrico, para usos diversos, y particularmente regular la velocidad de los electromotores
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ES156615A1942-03-061942-03-06Aparato variador de la intensidad del fluido electrico, para usos diversos, y particularmente regular la velocidad de los electromotores
ExpiredES156615A3
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