Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871559 | Methods for preservation of foodstuffs | Joseph E. Dunn, R. Wayne Clark, John F. Asmus, Keith Boyer, Fraincois Painchaud +1 more | 1989-10-03 |
| 4838154 | Apparatus for extending the shelf life of fluid food products | Joseph E. Dunn | 1989-06-13 |
| 4837794 | Filter apparatus for use with an x-ray source | John C. Riordan | 1989-06-06 |