Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5207442 | Toy vehicle with track and roller drive train | Frank Gray | 1993-05-04 |
| 5110148 | Three-wheeled scooter with reciprocating treadle drive | Frank Gray | 1992-05-05 |
| 4880249 | Pedal operated vehicle with cam and cam follower drive assembly | Frank Gray | 1989-11-14 |