Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5044926 | Anti-backflow valve for injection molding machines | James E. O'Bryan | 1991-09-03 |
| 5035605 | Nozzle shut-off valve for an injection molding machine | Norman L. Steffens | 1991-07-30 |
| 4850851 | Anti-backflow valve for injection molding machines | — | 1989-07-25 |