Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5315988 | Reactive, closed-circuit underwater breathing apparatus | John R. Clarke, Neal Carlson, Peter Wechgelaer | 1994-05-31 |
| 5299567 | Minimal elastance, closed-circuit underwater breathing apparatus | Neal Carlson | 1994-04-05 |