Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822274 | Hydraulic clamping unit for a molding apparatus | Basilio Yi | 1989-04-18 |
| 4808098 | Pipe extrusion die with a cooled and vacuumed additional mandrel | Basilio Yi | 1989-02-28 |
| 4798472 | Extruder screw with balanced flights of different functional sections | Basilio Yi | 1989-01-17 |