Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8631951 | Corncob holder field | — | 2014-01-21 |
| 7201181 | Mixing valve | Lawrence J. Grubka, Darryl L. Watkins, Paul K. Holliday | 2007-04-10 |
| 4445686 | Tennis teaching device | — | 1984-05-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8631951 | Corncob holder field | — | 2014-01-21 |
| 7201181 | Mixing valve | Lawrence J. Grubka, Darryl L. Watkins, Paul K. Holliday | 2007-04-10 |
| 4445686 | Tennis teaching device | — | 1984-05-01 |