Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474599 | Apparatus for electrostatically cleaning particulates from air | William A. Cheney | 1995-12-12 |
| 5330559 | Method and apparatus for electrostatically cleaning particulates from air | William A. Cheney | 1994-07-19 |
| 4781736 | Electrostatically enhanced HEPA filter | William A. Cheney | 1988-11-01 |
| 4231766 | Two stage electrostatic precipitator with electric field induced airflow | — | 1980-11-04 |