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Individual
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Individual
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Priority to ES70819ApriorityCriticalpatent/ES70819A1/es
Publication of ES70819A1publicationCriticalpatent/ES70819A1/es
ES70819A1919-09-051919-09-05Una disposición perfeccionada para la fijación de las piezas polares en las máquinas magneto-eléctricas.
ExpiredES70819A1
(es)