Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828671 | Unitary self-referencing combined dual gas sensor | Ching-Yu Lin | 1989-05-09 |
| 4803991 | Three electrode hydroquinone subcutaneous equilibrating tonometer | Richard L. Alena | 1989-02-14 |