Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4650340 | Rotating drum end seal | Paul D. Krawczyk | 1987-03-17 |
| 4545305 | Combined primary and spare submerged scraper conveyor arrangement | Guy Howard | 1985-10-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4650340 | Rotating drum end seal | Paul D. Krawczyk | 1987-03-17 |
| 4545305 | Combined primary and spare submerged scraper conveyor arrangement | Guy Howard | 1985-10-08 |