Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10825431 | Instrument speaker art | — | 2020-11-03 |
| 8122563 | Bowling lane conditioning machine | Roy A. Burkholder, Troy A. Recknagel, Patrick J. Mitchell, Robert J. Prinz, William C. Sias +2 more | 2012-02-28 |
| 7784147 | Bowling lane conditioning machine | Roy A. Burkholder, Troy A. Recknagel, Patrick J. Mitchell, Robert J. Prinz, William C. Sias +2 more | 2010-08-31 |