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Individual
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Priority to ES0168868ApriorityCriticalpatent/ES168868A2/es
Publication of ES168868A2publicationCriticalpatent/ES168868A2/es
Mejoras en la patente principal nº 154.869 caracterizada porque la pantalla reflectora estará compuesta por la combinación de dos o más superficies cilíndricas reflectoras de generatríz cualquiera unidas por sus líneas de intersección.
ES0168868A1945-01-261945-01-26Mejoras introducidas con el objeto de la patente
ExpiredES168868A2
(es)