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Editorial Teide S A
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Editorial Teide S A
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Priority to ES1969148623UpriorityCriticalpatent/ES148623Y/en
Publication of ES148623UpublicationCriticalpatent/ES148623U/en
Application grantedgrantedCritical
Publication of ES148623YpublicationCriticalpatent/ES148623Y/en
Agricultural Chemicals And Associated Chemicals
(AREA)
Abstract
Device for initiation to the calculation, consisting of a plurality of parallelepiped pieces, in groups of different colors, decimal base, duodecimal or according to any other arithmetic system, which are coupled together by simple pressure, through holes and complementary lugs centered on each of its faces, so that the groups of pieces, are of the same or different colors, can be established in a variety of configurations. (Machine-translation by Google Translate, not legally binding)
ES1969148623U1969-05-161969-05-16
DEVICE FOR STARTING THE CALCULATION.
ExpiredES148623Y
(en)
Plate that when assembling with identical ones, is capable of forming unlimited combinations (Machine-translation by Google Translate, not legally binding)