Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622190 | Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core | Cynthia W. Arterbery, W. Timothy Callaham, Gus D. Keritsis, Kenneth A. Newman, Roger S. Slagle +1 more | 1997-04-22 |