Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267764 | Ceiling anchor installation apparatus | Michael S. Hoffman, Amy Potts | 1993-12-07 |
| 4353063 | Bus destination sign with programmed destination name and manually settable route numbers for combined display | — | 1982-10-05 |
| 4325062 | Monitor for bus destination signs | — | 1982-04-13 |