Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660587 | Passive ventilation system and method | — | 1997-08-26 |
| 5603656 | Passive ventilation device and method | David C. Harrison | 1997-02-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660587 | Passive ventilation system and method | — | 1997-08-26 |
| 5603656 | Passive ventilation device and method | David C. Harrison | 1997-02-18 |