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Individual
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Individual
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Priority to ES226613ApriorityCriticalpatent/ES226613A3/en
Publication of ES226613A3publicationCriticalpatent/ES226613A3/en
Improvements in the construction of spectacle frames, characterized in that each glass or glass holder frame is supported by a flexible torsion bar, fixed on the front bar of the frame. (Machine-translation by Google Translate, not legally binding)
ES226613A1956-02-021956-02-02Improvements in the construction of the glasses. (Machine-translation by Google Translate, not legally binding)
ExpiredES226613A3
(en)