Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6969461 | Combination particulate and acid-neutralizing filter | John H. Beard | 2005-11-29 |
| 6919023 | Acid neutralizing filter canister | Steven J. Merritt, Gene W. Brown, John H. Beard | 2005-07-19 |