ES10908Y - System of superimposed discs comprising the tables of addition, subtraction, multiplication and division. - Google Patents
System of superimposed discs comprising the tables of addition, subtraction, multiplication and division.Info
- Publication number
- ES10908Y ES10908Y ES0010908U ES10908U ES10908Y ES 10908 Y ES10908 Y ES 10908Y ES 0010908 U ES0010908 U ES 0010908U ES 10908 U ES10908 U ES 10908U ES 10908 Y ES10908 Y ES 10908Y
- Authority
- ES
- Spain
- Prior art keywords
- subtraction
- multiplication
- tables
- division
- addition
- 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.)
- Expired
Links
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0010908U ES10908Y (en) | 1944-11-17 | 1944-11-17 | System of superimposed discs comprising the tables of addition, subtraction, multiplication and division. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0010908U ES10908Y (en) | 1944-11-17 | 1944-11-17 | System of superimposed discs comprising the tables of addition, subtraction, multiplication and division. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES10908U ES10908U (en) | 1945-02-01 |
| ES10908Y true ES10908Y (en) | 1945-11-16 |
Family
ID=51075067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0010908U Expired ES10908Y (en) | 1944-11-17 | 1944-11-17 | System of superimposed discs comprising the tables of addition, subtraction, multiplication and division. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES10908Y (en) |
-
1944
- 1944-11-17 ES ES0010908U patent/ES10908Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES10908U (en) | 1945-02-01 |
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