Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4552490 | Solids feed control valve assembly | — | 1985-11-12 |
| 4535801 | Multi-purge gate valve for particulate solids flow | — | 1985-08-20 |
| 4405561 | Drain and sampling valve assembly for a fluidized bed reactor | Frederick C. Alverson, John S. Karg | 1983-09-20 |