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Priority to ES122636UpriorityCriticalpatent/ES122636Y/en
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Publication of ES122636YpublicationCriticalpatent/ES122636Y/en
Reinforcement and fastening device for document folders characterized by being formed by a metal sheet of rectangular shape and thin thickness coated on both sides with a layer of plastic material such as polythene forming a single body being the thickest plastic coating by one of its faces which has parallel ribs near its longitudinal edges so that when bending forming a channel with the slightly separated edges are facing each other and by their adhesion on the surface of the cardboard they avoid lateral slippage producing a perfect subjection of the edges. Documents contained in the folder. (Machine-translation by Google Translate, not legally binding)
ES122636U1966-06-151966-06-15
REINFORCEMENT AND SUPPORT DEVICE FOR DOCUMENT FOLDERS.
ExpiredES122636Y
(en)
Procedure for the manufacture of plastic plates by passing the plastic material a pair of cylinders. (Machine-translation by Google Translate, not legally binding)