Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688693 | Method and system for sampling and determining the presence of contaminants in recyclable plastic materials | David H. Fine, Freeman W. Fraim, Stephen J. MacDonald, Alex Malaspina, Dirck vanBuren Myers | 1997-11-18 |