Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758884 | Air filtration system using point ionization sources | Robert M. Swinehart | 2004-07-06 |
| D492019 | Air cleaner | Robert M. Swinehart | 2004-06-22 |
| D491655 | Air cleaner | Robert M. Swinehart | 2004-06-15 |