Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045016 | Toy vehicle with electronic sounder and direction sensor | Carl M. Stern, Stephen L. Hayes | 1991-09-03 |
| 4946416 | Vehicle with electronic sounder and direction sensor | Carl M. Stern, Stephen L. Hayes | 1990-08-07 |