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Priority to ES1970157135UpriorityCriticalpatent/ES157135Y/en
Publication of ES157135UpublicationCriticalpatent/ES157135U/en
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Publication of ES157135YpublicationCriticalpatent/ES157135Y/en
Improved binder device characterized by being constituted by a flat piece in the form of a rectangular frame with its wider ends than the larger sides, in the wide areas of which there are rectangular notches on which a conspicuous projection of a bridge is superimposed. The same piece, of a sensibly parallelepipedic shape and has a slot in its edge towards the interior of the piece. Intended for the passage of elements or flexible fixing element that links through holes to introduce modifications, changes of materials, shapes and holes the set of documents and the cover of the folder which adapts the device. (Machine-translation by Google Translate, not legally binding)