Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4248692 | Process for the discharge of ash concentrate from a coal deashing system | Donald E. Rhodes | 1981-02-03 |
| 4227994 | Operation of a coal deashing process | Donald E. Rhodes | 1980-10-14 |