Issued Patents 1989
Showing 1–2 of 2 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 |
Showing 1–2 of 2 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 |