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Priority to ES1972176832UpriorityCriticalpatent/ES176832Y/en
Publication of ES176832UpublicationCriticalpatent/ES176832U/en
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Publication of ES176832YpublicationCriticalpatent/ES176832Y/en
Improved domino tiles, essentially characterized in that the upper box comprising provided, with aligned through holes, has attached on its inner side a sheet of contrasting color which sheet closes said holes by its base, acting as contrasted background of the latter . (Machine-translation by Google Translate, not legally binding)