Christianson; Roy O.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Christianson; Roy O..The latest application filed is for "cyclone separator with filter assembly for pneumatic conveyor".
- Christianson; Roy O. - Blomkest MN
| Patent | Date |
|---|---|
| Cyclone separator with filter assembly for pneumatic conveyor Grant 5,163,786 - Christianson * November 17, 1 | 1992-11-17 |
| Discharge system for grain handling apparatus Grant 4,433,946 - Christianson , et al. February 28, 1 | 1984-02-28 |
| Bulk material handling apparatus Grant D271,105 - Christianson , et al. October 25, 1 | 1983-10-25 |
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