Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4980571 | Methods and apparatus for measuring sidestream smoke | Douglas D. McRae, Bobby W. Francis, Leonard E. Brown, Jr., Roger A. Comes | 1990-12-25 |
| 4238283 | Post-treatment of humic acid-dyed paper | Willard A. Geiszler, Jr. | 1980-12-09 |