Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4372837 | Radial flow electrofilter | Frederick D. Watson, Weldon D. Mayse | 1983-02-08 |
| 4302310 | Radial flow electrofilter | Frederick D. Watson, Weldon D. Mayse | 1981-11-24 |
| 4269681 | Radial flow electrofilter | Frederick D. Watson, Weldon D. Mayse | 1981-05-26 |