Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322098 | Apparatus and method for conveyance of flowable solid materials | Lee O. Christianson, Roland Rauenhorst | 1994-06-21 |
| 5163786 | Cyclone separator with filter assembly for pneumatic conveyor | — | 1992-11-17 |
| 4913597 | Silencer for pneumatic grain conveyor | Frank W. Christianson | 1990-04-03 |
| 4887936 | Cyclone separator with accelerator plate for pneumatic conveyor | Frank W. Christianson | 1989-12-19 |
| 4846605 | Pneumatic grain conveyor with universal frame | Frank W. Christianson | 1989-07-11 |
| 4433946 | Discharge system for grain handling apparatus | Ted T. Christianson | 1984-02-28 |
| D271105 | Bulk material handling apparatus | Ted T. Christianson | 1983-10-25 |