Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4229813 | Elapsed time indicator | Robert L. Lilly, Gerardus L. J. Tummers, Claude D. Johnson | 1980-10-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4229813 | Elapsed time indicator | Robert L. Lilly, Gerardus L. J. Tummers, Claude D. Johnson | 1980-10-21 |