Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8164429 | Operational-state responsive audiovisual systems | Richard A. Zirnheld | 2012-04-24 |
| 7938218 | Children's ride-on vehicles having ground detection systems | William R. Howell, John Rhein, Gerald P. Sitarski, Richard A. Zirnheld | 2011-05-10 |
| 7591335 | Children's ride-on vehicles having ground detection systems | William R. Howell, John Rhein, Gerald P. Sitarski, Richard A. Zirnheld | 2009-09-22 |
| 7568538 | Children's ride-on vehicle charging assemblies with back feed protection | Steven Robert Drosendahl, Stephen Michalak | 2009-08-04 |
| 7413041 | Children's ride-on vehicles having improved motor assemblies | Steven Robert Drosendahl | 2008-08-19 |
| 5928020 | Power connector system for a ride-on vehicle | Julian J. Bishop, Chuck J. Crofut | 1999-07-27 |