Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8287614 | Supplemental filter media support insert for an air cleaner | Grant Gillispie | 2012-10-16 |
| 4932703 | Truck bed extension | John M. Chamberlin | 1990-06-12 |
| 4437481 | Self-actuating drip valve | John M. Chamberlin | 1984-03-20 |