Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Escoda Badaran Luis
Original Assignee
Escoda Badaran Luis
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Publication date
Application filed by Escoda Badaran LuisfiledCriticalEscoda Badaran Luis
Priority to ES112413UpriorityCriticalpatent/ES112413Y/en
Publication of ES112413UpublicationCriticalpatent/ES112413U/en
Application grantedgrantedCritical
Publication of ES112413YpublicationCriticalpatent/ES112413Y/en
Pedagogic useful essentially characterized by being constituted by an arithmetic table which has at least one slot that acts as a dividing line between a series of factors and their corresponding results, the table itself incorporated to said slot advantageously over the sector comprising the results of those factors a piece that moves by the extension of the latter hiding the results corresponding to the factors considered in each case. (Machine-translation by Google Translate, not legally binding)
ES112413U1965-03-261965-03-26
A PEDAGOGICAL TOOL.
ExpiredES112413Y
(en)