Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D291068 | Sports timer | Charles Jones, James L. Murphy | 1987-07-28 |
| 4637732 | Hand held athletic officiating timers | Charles Jones, James L. Murphy | 1987-01-20 |
| 4195291 | Digital controlled rotation sensor | — | 1980-03-25 |