Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302118 | Soil remediation apparatus | Malcolm L. Swanson | 1994-04-12 |
| 5273355 | Aggregate dryer and soil incinerator | James G. May | 1993-12-28 |
| 5216898 | Cooling apparatus | Malcolm L. Swanson | 1993-06-08 |