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Biblograt S A
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Biblograt S A
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Priority to ES1972181526UpriorityCriticalpatent/ES181526Y/en
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Publication of ES181526YpublicationCriticalpatent/ES181526Y/en
Dictionary of perfected pocket, essentially characterized by the: roof of being constituted by a plurality of juxtaposed and concentric discoidal foils of different stepped diameters, gathered by a common point on which they can rotate freely and independently, existing. In the outer sheets of the stack, which are those of smaller radius, a voided circular sector and two voided circular sectors opposed by the vortex, respectively, whose sectors integrate in both discs visors that are arranged opposite the circular sectors of equal number of degrees in which the sheets inferior to those mentioned are divided, and in whose divisions are printed the words in two languages and the figurative pronunciation. (Machine-translation by Google Translate, not legally binding)