Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4602727 | Rotary feeder system | — | 1986-07-29 |
| 4509963 | Industrial vacuum cleaner | — | 1985-04-09 |
| 4455111 | Pressure conveyor for feeding pulverulent material into a pressurized air conveyor pipeline | Hazelton H. Avery | 1984-06-19 |
| 4363571 | System for feeding pulverulent material into a pressurized air conveyor pipeline | Blase C. Rau | 1982-12-14 |