Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349359 | Electrostatic precipitator apparatus having an improved ion generating means | Richard A. Fitch, James E. Drummond | 1982-09-14 |
| 4236900 | Electrostatic precipitator apparatus having an improved ion generating means | Richard A. Fitch, James E. Drummond | 1980-12-02 |