Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5200736 | Assembly for monitoring helmet thermal conditions | Christopher E. Coombs, Robert M. Armstrong, Robert E. Gray | 1993-04-06 |
| 5097826 | Pressure monitoring device for self-contained breathing apparatus | Robert E. Gray, Robert M. Armstrong, Christopher E. Coombs | 1992-03-24 |