Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867153 | Medical drain system for removing liquid from ventilating system | Rick D. Lorenzen, William R. Houghton, Darrel Palmer | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867153 | Medical drain system for removing liquid from ventilating system | Rick D. Lorenzen, William R. Houghton, Darrel Palmer | 1989-09-19 |