Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8402977 | Tobacco smoke filter | — | 2013-03-26 |
| 4721120 | Smoking articles | Colin Campbell Greig, Richard R. Baker, Frederick J. Dashley | 1988-01-26 |
| 4624268 | Smoking articles | Richard R. Baker, Frederick J. Dashley, Colin Campbell Greig | 1986-11-25 |