Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840172 | Device for positioning an endotracheal tube | Douglas J. Augustine | 1989-06-20 |
| 4832020 | Tracheal intubation guide | — | 1989-05-23 |
| 4819619 | Device for inserting a nasal tube | Douglas J. Augustine | 1989-04-11 |