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Priority to ES0057289UpriorityCriticalpatent/ES57289Y/en
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Publication of ES57289YpublicationCriticalpatent/ES57289Y/en
Improved postal card, characterized by the fact that the photographic impression of a monument or any other motive is verified on the surface that constitutes the postcard itself, taking before it another plane, which will be the image of a character, cut out, in accordance with what is reflected in the background. (Machine-translation by Google Translate, not legally binding)
A system of letters and numbers of the numbering system, in its different characters, for the learning of reading and writing in children (Machine-translation by Google Translate, not legally binding)