Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4389804 | Matrix display | George E. Ellefsen | 1983-06-28 |
| 4380879 | Matrix display | — | 1983-04-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4389804 | Matrix display | George E. Ellefsen | 1983-06-28 |
| 4380879 | Matrix display | — | 1983-04-26 |