Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619988 | First stage pressure regulator for emergency breathing apparatus | Frank J. Fabin | 1997-04-15 |
| 5592935 | Positive/negative air pressure adaptor for use with respirators | Gerald V. Elstran, Jerome D. Phillips | 1997-01-14 |