Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882286 | Digestion apparatus useful for a kjeldahl method | Edwin D. Neas | 1989-11-21 |
| 4877624 | Digestion and sterilization methods and apparatus | Wyatt Price Hargett, Jr. | 1989-10-31 |
| 4861556 | Microwave-based apparatus and Kjeldahl method | Edwin D. Neas | 1989-08-29 |