Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320946 | Method and element for assay of catechol and catechol generating substances | James R. Schaeffer | 1994-06-14 |
| 5294540 | Ethanol analytical element | Karen L. Warren, James R. Schaeffer | 1994-03-15 |