Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821745 | Apparatus and method for overcoming the habit of tobacco smoking | David I. Rosen | 1989-04-18 |
| RE32848 | Anti-microbial reaction product of #9 allantoin and formaldehyde | Philip A. Berke | 1989-01-31 |