Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889549 | Plunger operating mechanism for a glass forming machine | Robert J. Douglas | 1989-12-26 |
| 4888040 | Neck ring/plunger assembly for a glassware forming machine | Robert J. Douglas | 1989-12-19 |
| 4838921 | Plunger assembly for a glassware forming machine | — | 1989-06-13 |
| 4836839 | Plunger assembly for a glassware forming machine | Robert J. Douglas | 1989-06-06 |
| 4836842 | Plunger assembly for a glassware forming machine | — | 1989-06-06 |