Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11135728 | Lid assembly for portable biochar kiln | Mikel S. Olander, Perry H. Pierce, William T. Beierwaltes | 2021-10-05 |
| 10883052 | Biochar kiln | Mikel S. Olander, Perry H. Pierce, William T. Beierwaltes | 2021-01-05 |