Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848375 | Filter cigarette | Walter A. Nichols, Paul N. Gauvin, Francis M. Sprinkel | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848375 | Filter cigarette | Walter A. Nichols, Paul N. Gauvin, Francis M. Sprinkel | 1989-07-18 |