Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838286 | Smoking articles | — | 1989-06-13 |
| 4754766 | Tobacco smoke filters | John A. Luke | 1988-07-05 |
| 4660579 | Tobacco smoke filters | Henry G. Horsewell, Martin Graham Duke | 1987-04-28 |
| 4300577 | Tobacco-smoke filters | Henry G. Horsewell | 1981-11-17 |