Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821321 | Combined vapor and particulate filter | Laurence Anthony Pears | 2004-11-23 |
| 6332916 | Activated carbon filter and process for the separation of noxious gases | Paul Norman, Philip A Barnes, Elizabeth A. Dawson | 2001-12-25 |