Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7178526 | Quick-donning full face oxygen mask with inflatable harness and soft foldable lens | Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman | 2007-02-20 |
| 6672307 | Quick-donining full face oxygen mask with inflatable harness and soft foldable lens | Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman | 2004-01-06 |
| 6443155 | Quick-donning full face oxygen mask with inflatable harness and soft foldable lens | Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman | 2002-09-03 |
| 6070580 | Quick-donning full face oxygen mask with inflatable harness and soft foldable lens | Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman | 2000-06-06 |
| 5957132 | Quick-donning full face oxygen mask with inflatable harness and soft foldable lens | Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman | 1999-09-28 |
| 5664566 | Quick-donning full face oxygen mask with inflatable harness and soft foldable lens | Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman | 1997-09-09 |
| 4821346 | Toilet bowl cleaning composition dispenser | — | 1989-04-18 |
| 4480342 | Passive dispenser | — | 1984-11-06 |
| 4375109 | Passive dispenser having a double air vent system | — | 1983-03-01 |