Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7413593 | Polarity reversing circuit for electrostatic precipitator systems | Ralph F. Altman, Robert N. Guenther | 2008-08-19 |
| 7101422 | Polarity reversing circuit for electrostatic precipitator systems | Ralph F. Altman, Robert N. Guenther | 2006-09-05 |
| 7001447 | Polarity reversing circuit for electrostatic precipitator system | Ralph F. Altman, Robert N. Guenther | 2006-02-21 |
| 6063168 | Electrostatic precipitator | Sabert Oglesby, Jr. | 2000-05-16 |
| 5972076 | Method of charging an electrostatic precipitator | Sabert Oglesby, Jr. | 1999-10-26 |