Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10938335 | Motor winding temperature estimator | — | 2021-03-02 |
| D351081 | Box for tape cassettes | Stephen Duddy | 1994-10-04 |
| 5297767 | Multiple container holder | Ronald A. Dykstra, David J. Spykerman, Joseph Buonodono | 1994-03-29 |
| 5195711 | Multiple container holder | Ronald A. Dykstra, David J. Spykerman, Joseph Buonodono | 1993-03-23 |
| 5087008 | Multiple container holder | Ronald A. Dykstra, David J. Spykerman, Joseph Buonodono | 1992-02-11 |
| 4900037 | Accelerating arrow | — | 1990-02-13 |
| D272975 | Coffee dispenser | — | 1984-03-13 |
| D264214 | Mobile beverage cooling and dispensing unit | Lee M. Bowen | 1982-05-04 |