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Individual
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Priority to ES0231875ApriorityCriticalpatent/ES231875A2/en
Publication of ES231875A2publicationCriticalpatent/ES231875A2/en
Improvements in the object of the main patent no. 228,634, by an improved apparatus for driving blinds, essentially characterized by the fact that the maneuvering group comprises a transmission in reduction integrated by a helical wheel set on the shaft of the drum or on axis parallel and a control constituted by an endless spindle of suitable characteristic to make said reduction irreversible. (Machine-translation by Google Translate, not legally binding)
ES0231875A1956-11-121956-11-12A perfected apparatus for driving roll blinds (Machine-translation by Google Translate, not legally binding)
ExpiredES231875A2
(en)