Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872579 | Aspirating/ventilating apparatus and method | — | 1989-10-10 |
| 4867153 | Medical drain system for removing liquid from ventilating system | Rick D. Lorenzen, William R. Houghton, Kevin Kammerer | 1989-09-19 |
| 4846376 | Inversion foamer | — | 1989-07-11 |
| 4836199 | Aspirating/ventilating apparatus and method | — | 1989-06-06 |