Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889129 | Apparatus for treatment of tumors | Thomas J. Dougherty, Kenneth R. Weishaupt | 1989-12-26 |
| 4866168 | Hematoporphyrin derivatives and process of preparing | Thomas J. Dougherty, Kenneth R. Weishaupt | 1989-09-12 |