Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6302292 | Ticket counting dispenser | Christopher E. Schafer, Ryan B. Gruhn, Tim Caltrider, Glenn Miller, Ryan P. Littler +2 more | 2001-10-16 |
| 6073572 | Floating dock | Ryan B. Gruhn, Michael E. Irlmeier, Kurt L. McCuen, Christopher E. Schafer, Steve Irlmeier, deceased | 2000-06-13 |