ES140575Y - BLACKBOARD. - Google Patents
BLACKBOARD.Info
- Publication number
- ES140575Y ES140575Y ES1968140575U ES140575U ES140575Y ES 140575 Y ES140575 Y ES 140575Y ES 1968140575 U ES1968140575 U ES 1968140575U ES 140575 U ES140575 U ES 140575U ES 140575 Y ES140575 Y ES 140575Y
- Authority
- ES
- Spain
- Prior art keywords
- blackboard
- 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 |
---|---|---|---|
ES1968140575U ES140575Y (en) | 1968-07-23 | 1968-07-23 | BLACKBOARD. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1968140575U ES140575Y (en) | 1968-07-23 | 1968-07-23 | BLACKBOARD. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES140575U ES140575U (en) | 1969-01-01 |
ES140575Y true ES140575Y (en) | 1969-07-16 |
Family
ID=8323537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES1968140575U Expired ES140575Y (en) | 1968-07-23 | 1968-07-23 | BLACKBOARD. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES140575Y (en) |
-
1968
- 1968-07-23 ES ES1968140575U patent/ES140575Y/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES140575U (en) | 1969-01-01 |
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