ES145510U - Didactic device for the practice of arithmetic operations. (Machine-translation by Google Translate, not legally binding) - Google Patents
Didactic device for the practice of arithmetic operations. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES145510U ES145510U ES145510U ES145510U ES145510U ES 145510 U ES145510 U ES 145510U ES 145510 U ES145510 U ES 145510U ES 145510 U ES145510 U ES 145510U ES 145510 U ES145510 U ES 145510U
- Authority
- ES
- Spain
- Prior art keywords
- translation
- practice
- machine
- legally binding
- google translate
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Auxiliary Devices For Music (AREA)
Abstract
Didactic device for the practice of arithmetic operations, essentially characterized by the fact of being constituted by a board comprising several longitudinal and parallel recesses, of which the first on the left comprises nine aligned cards, the longitudinal dimension of the pocket being nine spaces of tab, plus several empty spaces of card while the remaining boxes have ten and eight cards, and several empty spaces of card, being its longitudinal dimension of eighteen spaces plus the card gaps. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1969145510U ES145510Y (en) | 1969-02-11 | 1969-02-11 | DIDACTIC DEVICE FOR THE PRACTICE OF ARIT-METIC OPERATIONS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1969145510U ES145510Y (en) | 1969-02-11 | 1969-02-11 | DIDACTIC DEVICE FOR THE PRACTICE OF ARIT-METIC OPERATIONS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES145510U true ES145510U (en) | 1969-05-16 |
ES145510Y ES145510Y (en) | 1970-01-01 |
Family
ID=8327508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES1969145510U Expired ES145510Y (en) | 1969-02-11 | 1969-02-11 | DIDACTIC DEVICE FOR THE PRACTICE OF ARIT-METIC OPERATIONS. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES145510Y (en) |
-
1969
- 1969-02-11 ES ES1969145510U patent/ES145510Y/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES145510Y (en) | 1970-01-01 |
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