Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8844067 | Toilet fill valve water leak and overflow notification device | Richard Quintana, Kermit L. Achterman | 2014-09-30 |
| 8809214 | Refractory slag band | Norman Edward Rogers, David Kennedy, Shibiao Yang | 2014-08-19 |
| 8209792 | Dual-ceramic shut-off valve, external to tank | Richard Quintana, Kermit L. Achterman, David M. Parrish | 2012-07-03 |
| 5282626 | Golf putting practice device | — | 1994-02-01 |