Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6053809 | Smoke detection and ventilation system | — | 2000-04-25 |
| 4867376 | Air control system | Harry R. Cross | 1989-09-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6053809 | Smoke detection and ventilation system | — | 2000-04-25 |
| 4867376 | Air control system | Harry R. Cross | 1989-09-19 |