Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859611 | Affinity column and process for detection of low molecular weight toxic substances | John D. Groopman, Frederick G. Bargoot, Christopher P. Ferrari | 1989-08-22 |
| 4818687 | Affinity column and process for detection of low molecular weight toxic substances | John D. Groopman | 1989-04-04 |