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Individual
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Individual
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Priority to ES113441UpriorityCriticalpatent/ES113441U/en
Publication of ES113441UpublicationCriticalpatent/ES113441U/en
Covers or covers for bindings by the system of spiral characterized by the fact of being precisely one piece covering both sides of the set of bound sheets and the spine and presenting two parallel rows of perforations or holes whose diameter and separation between them is appropriate to pass through them in a normal manner the spirals of the wire or plastic spiral that holds the leaves, said alignments being precisely located coinciding fully or tangentially with the longitudinal lateral edges of the spine of the binding, concurring in addition to the circumstance of coming practiced in said loin or in the space between the aforementioned alignments of holes or holes one or more longitudinal lines of bending by which that when opening the covers is folded towards the center of the spiral in a convenient amount so as not to impede the movement of the leaves . (Machine-translation by Google Translate, not legally binding)
ES113441U1965-04-241965-04-24Covers or covers for bindings by the spiral system (Machine-translation by Google Translate, not legally binding)
PendingES113441U
(en)