ES10908U - System of superimposed discs comprising the tables of adding, subtracting, multiplying and dividing. (Machine-translation by Google Translate, not legally binding)
- Google Patents
System of superimposed discs comprising the tables of adding, subtracting, multiplying and dividing. (Machine-translation by Google Translate, not legally binding)
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TAPIA GARNICA PIO
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TAPIA GARNICA PIO
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Priority to ES0010908UpriorityCriticalpatent/ES10908Y/en
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Publication of ES10908YpublicationCriticalpatent/ES10908Y/en
Agricultural Chemicals And Associated Chemicals
(AREA)
Information Retrieval, Db Structures And Fs Structures Therefor
(AREA)
Manufacture Of Macromolecular Shaped Articles
(AREA)
Abstract
On a circular disk perforated in its center, having practiced, a semicircular slot, and counting on one face two concentric numerations, from zero to nine and from zero to ten and nine, respectively; and on the other side an arc numbering, from one to nine, more, in the radiated direction, the multiples of the first ten numbers of the natural series, including zero. (Machine-translation by Google Translate, not legally binding)
ES0010908U1944-11-171944-11-17
System of superimposed discs comprising the tables of addition, subtraction, multiplication and division.
ExpiredES10908Y
(en)
System of superimposed discs comprising the tables of adding, subtracting, multiplying and dividing. (Machine-translation by Google Translate, not legally binding)
Improved system of superimposed discs comprising the addition, subtraction, multiplication and division tables, for school use. (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)
Furniture-chair that is composed or formed three different furniture and different use each one of them. (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of calculating devices for production engineering and analogs. (Machine-translation by Google Translate, not legally binding)