Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4616645 | Diving regulator with anti free-flow vane | Michael M. Martin | 1986-10-14 |
| 4446859 | Breathing apparatus | — | 1984-05-08 |
| 4214580 | Breathing apparatus | — | 1980-07-29 |
| 4182323 | Breathing apparatus | — | 1980-01-08 |