Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851212 | Air deodorizer composition and method | Raymond Brown, Frederick Lawson, Norman Usen | 1989-07-25 |
| 4812308 | Hydrogen peroxide-releasing tooth powder | Herman L. Marder, Wayne R. Sorenson | 1989-03-14 |