Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842690 | Mixing chlorine gas into paper pulp slurries | Lawrence E. Gazdik | 1989-06-27 |
| 4838863 | Safe needle system for collecting fluids | Daniel Q. Longmire | 1989-06-13 |
| 4838869 | Retractable needle syringe | — | 1989-06-13 |