Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850201 | Precision-controlled water chiller | Philip D. Oswalt, Harold R. Short | 1989-07-25 |
| 4802338 | Precision-controlled water chiller | Philip D. Oswalt, Harold R. Short | 1989-02-07 |