Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643113 | Low voltage modular room ionization system | William S. Richie, Jr., Philip R. Hall | 2003-11-04 |
| 6507473 | Low voltage modular room ionization system | William S. Richie, Jr., Philip R. Hall | 2003-01-14 |