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Individual
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Individual
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Priority to ES225194ApriorityCriticalpatent/ES225194A1/en
Publication of ES225194A1publicationCriticalpatent/ES225194A1/en
Improvements in the folding revolving doors, characterized by the drag device, consisting of a carriage sliding on two parallel tracks, supported on four wheels or pulleys, with radial travel from the fixed point of rotation of the core of the doors to a point of the periphery. (Machine-translation by Google Translate, not legally binding)
ES225194A1955-11-241955-11-24Improvements implemented in folding revolving doors (Machine-translation by Google Translate, not legally binding)
ExpiredES225194A1
(en)