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LUNDQUIST BORIS
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LUNDQUIST BORIS
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Priority to ES0026436UpriorityCriticalpatent/ES26436Y/en
Publication of ES26436UpublicationCriticalpatent/ES26436U/en
Application grantedgrantedCritical
Publication of ES26436YpublicationCriticalpatent/ES26436Y/en
Management, Administration, Business Operations System, And Electronic Commerce
(AREA)
Abstract
Device for calculating currency changes, consisting mainly of a disk that can rotate around its own center with respect to a support board, the disk being provided on its periphery or in the vicinity thereof with a succession of signals and the tablet -support of another succession of signals arranged according to a circle or circles concentric with the mobile, one of said successions corresponding to the divisions and numbering according to the logarithmic series, to the typical mode of the calculation rules, and the other sequence to indications or references of monetary signs, emblems, colors or other signs representative or corresponding to a nation or group of nations or simply to values-type of quotation of currencies or of products or activities to which special changes correspond. (Machine-translation by Google Translate, not legally binding)
ES0026436U1951-03-311951-03-31
Device for quick calculation of currency exchange
ExpiredES26436Y
(en)
A complex of disks for the simultaneous exhibition of images and legends related to each other (Machine-translation by Google Translate, not legally binding)
System of superimposed discs comprising the tables of adding, subtracting, multiplying and dividing. (Machine-translation by Google Translate, not legally binding)
Simplified device of numerator dater, based on printing plate and insert year indicator adaptable to said plate (Machine-translation by Google Translate, not legally binding)
Device, indicator of the dates of the football matches of the league, while signaling the opponents and the field, of the game. (Machine-translation by Google Translate, not legally binding)
Apparatusapplicable to sulphatines by which data of great interest in spinning is determined quickly (Machine-translation by Google Translate, not legally binding)