Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7326101 | Switching arrangements and accessories capable of activation by air | Robert W. Engel, Robert Stephen Lee, John Rey Hollis, William J. Kelley | 2008-02-05 |
| 6776682 | Acrobatic doll and doll accessories capable of activation by air | Robert W. Engel, Robert Stephen Lee, John Rey Hollis, William J. Kelley | 2004-08-17 |