Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4452257 | Treatment for natural leaf tobacco wrapper | William F. Cartwright | 1984-06-05 |
| 4243053 | Filter cigar | William F. Cartwright, D. Bernard Higgins, Robert P. Mikkelson | 1981-01-06 |