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Individual
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Individual
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Priority to ES0010685UpriorityCriticalpatent/ES10685Y/en
Publication of ES10685UpublicationCriticalpatent/ES10685U/en
Application grantedgrantedCritical
Publication of ES10685YpublicationCriticalpatent/ES10685Y/en
A calculating instrument of percentages, characterized in that it consists of a "table" that slides inside a piece called "cursor", which carries in its right or left margin the figures from 1 to 9, which are made to coincide with the of the "table" that has in its left margin the numbers from 1 to 50, and from 51 to 100 (on the back), being able to form in this way the figures with their complements, which we will call "cost". (Machine-translation by Google Translate, not legally binding)