Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344711 | Self-wiping multiple screw element mixer | Ernest Keith Marchildon, Grant R. Stephenson | 1982-08-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344711 | Self-wiping multiple screw element mixer | Ernest Keith Marchildon, Grant R. Stephenson | 1982-08-17 |