Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422647 | Volleyball out of bounds detecting and indicating system | James J. Joyce | 1983-12-27 |
| 4398724 | Volleyball net touch detecting and indicating system | James J. Joyce | 1983-08-16 |
| 4337527 | Acoustic Doppler detector | Arthur D. Delagrange, Cabell N. Pryor, Jr. | 1982-06-29 |