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PERPERE HENRI
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PERPERE HENRI
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Publication of ES217006A1publicationCriticalpatent/ES217006A1/en
Improvements in frames for projection screens, characterized by being curved and because the elements oriented in the direction in which the screen has to receive a curvature, are constituted by segments articulated with each other and capable of being placed and fixed in corresponding relative angular positions to the curvature to communicate to the screen. (Machine-translation by Google Translate, not legally binding)
ES0217006A1953-10-301954-08-17Improvements in frames for projection screens (Machine-translation by Google Translate, not legally binding)
ExpiredES217006A1
(en)