Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5447374 | Positioning device for temperature sensor in freeze drying | Douglas S. Fraser | 1995-09-05 |
| 4966469 | Positioning device for temperature sensor in freeze drying | Douglas S. Fraser | 1990-10-30 |
| 4823478 | Freeze dryer for unattended operation | — | 1989-04-25 |
| 4780964 | Process and device for determining the end of a primary stage of freeze drying | — | 1988-11-01 |