Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D265100 | Indicator for classroom control and education | — | 1982-06-22 |
| 4306869 | Educational aid for classroom use | David W. Allred | 1981-12-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D265100 | Indicator for classroom control and education | — | 1982-06-22 |
| 4306869 | Educational aid for classroom use | David W. Allred | 1981-12-22 |