Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4462904 | Pulsed regeneration of adsorption column | Donald G. Hager, Michael L. Massey | 1984-07-31 |
| 4416798 | Pulsed regeneration of adsorption column | Donald G. Hager, Michael L. Massey | 1983-11-22 |
| 4267057 | Water treatment for selective removal of nitrates | Donald G. Hager | 1981-05-12 |