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Individual
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Priority to ES0036027UpriorityCriticalpatent/ES36027Y/en
Publication of ES36027UpublicationCriticalpatent/ES36027U/en
Application grantedgrantedCritical
Publication of ES36027YpublicationCriticalpatent/ES36027Y/en
A device for the binding of loose changeable sheets consisting essentially of two metallic or plastic strips, flat, joined at one end by a rivet, which allows them to be opened and closed as scissors while at the other end they are they unite by means of a hook or the like, each of said strips being provided, on one of its sides with a series of arched or segment-shaped projections, which, when closed, fit together with each other forming the opposite an arc of 180º more or less oval, by which they pass the drills of the changeable leaves, allowing to return them to one and another side with extreme ease. (Machine-translation by Google Translate, not legally binding)