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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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES1971170266UpriorityCriticalpatent/ES170266Y/en
Publication of ES170266UpublicationCriticalpatent/ES170266U/en
Application grantedgrantedCritical
Publication of ES170266YpublicationCriticalpatent/ES170266Y/en
Machine perfected for teaching, characterized by comprising a frame or board in whose front face, has a lower group of rows consisting of a plurality of squares aligned can separate each row of the set since in each box will be a file with a question of a subject indicated in the box of greater size of the end, having in the upper part a group analogous to this in which the answers have been placed, of course in a different order. (Machine-translation by Google Translate, not legally binding)
ES1971170266U1971-06-231971-06-23
PERFECTED MACHINE FOR TEACHING.
ExpiredES170266Y
(en)