Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050260 | Humidifier sleep apnea treatment apparatus | Lewis George Gradon | 2000-04-18 |
| 5558084 | Humidifier with delivery tube condensation preventing structure and control | Andrew Baden Clark | 1996-09-24 |
| 5529060 | Humidifiers with control systems to prevent condensation | Andrew Paul Maxwell Salmon, David Stewart | 1996-06-25 |
| RE33219 | Clamp valves | Gerald S. Martin | 1990-05-22 |
| 4708831 | Methods of and/or apparatus for humidifying gases | Adrian John Elsworth, Paul Francis Zwaan, David Stewart | 1987-11-24 |
| 4634092 | Clamp valves | Gerald S. Martin | 1987-01-06 |