Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836224 | Cigarette | Bruce R. Bullings, Thomas A. Perfetti | 1989-06-06 |
| 4830028 | Salts provided from nicotine and organic acid as cigarette additives | Bruce R. Bullings, Thomas A. Perfetti | 1989-05-16 |