Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6726742 | Air cleaner with a secondary intake | John Marsh, Neil McGregor, Wayne E. Johnson | 2004-04-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6726742 | Air cleaner with a secondary intake | John Marsh, Neil McGregor, Wayne E. Johnson | 2004-04-27 |