Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867672 | Reduction of required mold-cavity clamping force and control of injection-molded product wall thickness | — | 1989-09-19 |
| 4846350 | Hollow, stackable molded product with rigidifying skirt-shaped flange | — | 1989-07-11 |
| 4846483 | Mandrel system for receiving cup having side wall ribbed interior surface for printing on exterior surface of side wall | — | 1989-07-11 |
| 4844405 | Injection molding of thin-walled plastic products | — | 1989-07-04 |
| 4807775 | Injection molding of thin-walled plastic products | — | 1989-02-28 |