Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5222623 | Covered drinking vessel | Douglas W. Smith, Robert E. Dawson | 1993-06-29 |
| 5192427 | Shower filters and accessories | Douglas W. Smith, Robert E. Dawson | 1993-03-09 |
| 4998228 | Drinking water filter | Scott Bair | 1991-03-05 |
| 4629098 | Portable liquid dispenser | — | 1986-12-16 |