Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5387036 | Organic material composting system | Daniel J. Hagen, Charles R. Olsen, Clifford E. Nelson | 1995-02-07 |
| 4439325 | Pressurized filtration system | — | 1984-03-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5387036 | Organic material composting system | Daniel J. Hagen, Charles R. Olsen, Clifford E. Nelson | 1995-02-07 |
| 4439325 | Pressurized filtration system | — | 1984-03-27 |