Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660282 | Method and apparatus for separating resource materials from solid waste | Tobin Djerf | 1997-08-26 |
| 5649785 | Method of treating solid waste, recovering the constituent materials for recycling and reuse, and producing useful products therefrom | Tobin Djerf | 1997-07-22 |