Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7836898 | Reduced ignition propensity smoking article | Michael Andrew Zawadzki, Arthur Ihrig, David Grider, David Williams | 2010-11-23 |
| 6837248 | Reduced ignition propensity smoking article | Michael Andrew Zawadzki, Arthur Ihrig, David Grider, David Williams | 2005-01-04 |
| 4564030 | Cigarette filter assembly | Albert B. Hudson | 1986-01-14 |