Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4942982 | Silo cleaning apparatus | Alan D. Johnson, Jeffrey C. Beckham, Kenneth L. White | 1990-07-24 |
| 4764221 | Silo cleaning process | Alan D. Johnson, Jeffrey C. Beckham, Kenneth L. White | 1988-08-16 |