Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6067927 | Visual indicator | Thomas C. Johnson | 2000-05-30 |
| 4829820 | Visual indicator | Thomas C. Johnson | 1989-05-16 |
| 4799383 | Visual indicator | Thomas C. Johnson | 1989-01-24 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6067927 | Visual indicator | Thomas C. Johnson | 2000-05-30 |
| 4829820 | Visual indicator | Thomas C. Johnson | 1989-05-16 |
| 4799383 | Visual indicator | Thomas C. Johnson | 1989-01-24 |