ES243053Y - DEVICE FOR THE PRACTICE OF ARITHMETIC OPERATIONS. - Google Patents
DEVICE FOR THE PRACTICE OF ARITHMETIC OPERATIONS.Info
- Publication number
- ES243053Y ES243053Y ES1979243053U ES243053U ES243053Y ES 243053 Y ES243053 Y ES 243053Y ES 1979243053 U ES1979243053 U ES 1979243053U ES 243053 U ES243053 U ES 243053U ES 243053 Y ES243053 Y ES 243053Y
- Authority
- ES
- Spain
- Prior art keywords
- practice
- arithmetic operations
- arithmetic
- operations
- 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 |
---|---|---|---|
ES1979243053U ES243053Y (en) | 1979-05-03 | 1979-05-03 | DEVICE FOR THE PRACTICE OF ARITHMETIC OPERATIONS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1979243053U ES243053Y (en) | 1979-05-03 | 1979-05-03 | DEVICE FOR THE PRACTICE OF ARITHMETIC OPERATIONS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES243053U ES243053U (en) | 1980-01-16 |
ES243053Y true ES243053Y (en) | 1980-06-16 |
Family
ID=8402694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES1979243053U Expired ES243053Y (en) | 1979-05-03 | 1979-05-03 | DEVICE FOR THE PRACTICE OF ARITHMETIC OPERATIONS. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES243053Y (en) |
-
1979
- 1979-05-03 ES ES1979243053U patent/ES243053Y/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES243053U (en) | 1980-01-16 |
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