Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840284 | Sloped bottom tank | — | 1989-06-20 |
| 4838443 | Vacuum discharge bin for bulk materials | Gene F. Cripe, Robert W. Luebbe | 1989-06-13 |
| 4785958 | Tank with sloped bottom | — | 1988-11-22 |
| 4778077 | Lid for portable bins | — | 1988-10-18 |