Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4484528 | Railway hopper car | Louis J. Harvatin | 1984-11-27 |
| 4484852 | Hopper bottom unit | — | 1984-11-27 |
| 4360295 | Combination gravity/pneumatic hopper bottom | — | 1982-11-23 |
| 4353668 | Hopper bottom unit | — | 1982-10-12 |
| 4352331 | Railway hopper car | Louis J. Harvatin | 1982-10-05 |
| 4189262 | Apparatus and method for handling dry bulk materials in a hopper-type container using air agitation | — | 1980-02-19 |