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Individual
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Individual
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Priority to ES0296468ApriorityCriticalpatent/ES296468A1/en
Publication of ES296468A1publicationCriticalpatent/ES296468A1/en
Improvements in the luminous flux regulating devices, characterized in that the apparatus consists of a base base on which a light emitting spot is installed, and which is inside a screen that is fixed to the base, this screen consisting of sheets , oriented according to the generatrices, alternatively transparent and opaque, coax with this fixed screen, and internally, a similar mobile screen, also constituted by sheets, oriented according to the generatrices, alternatively opaque and transparent. (Machine-translation by Google Translate, not legally binding)
ES0296468A1964-02-151964-02-15Improvements in luminous flow regulator appliances (Machine-translation by Google Translate, not legally binding)
ExpiredES296468A1
(en)