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Individual
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Individual
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Priority to ES7696ApriorityCriticalpatent/ES7696A3/es
Publication of ES7696A3publicationCriticalpatent/ES7696A3/es
ES7696A1887-12-191887-12-19Mejoras en la construcción de carretes o aparatos para la producción y el paso de las corrientes de la electricidad.
ExpiredES7696A3
(es)
Modificaciones introducidas en el aparato para resolver mecánicamente las operaciones del tanto por ciento o por mil llamado "Aritmocrético Palou".