Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6526971 | Variable volume ratio compound counterlung | — | 2003-03-04 |
| 6341604 | Balanced breathing loop compensation resistive alarm system and lung-indexed biased gas addition for any semi-closed circuit breathing apparatus and components and accessories therefor | — | 2002-01-29 |
| 6283120 | Variable volume ratio compound counterlung | — | 2001-09-04 |