Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6386200 | Bi-functional in-line phonation valve | John O'Mahony, David Frigger | 2002-05-14 |
| 6334441 | Phonation valve for breathing tube | Thomas Young, Tony Wondka | 2002-01-01 |
| 6189534 | Bi-functional in-line phonation valve | John O'Mahony, David Frigger | 2001-02-20 |
| 4960708 | Pressurized packaged reference liquid for blood gas analysis | Bruce I. Mayall | 1990-10-02 |