Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857531 | Guanine derivatives | David A. Borthwick, Barrie E. Kirk, Derek Norman Evans, Leslie Stephenson | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857531 | Guanine derivatives | David A. Borthwick, Barrie E. Kirk, Derek Norman Evans, Leslie Stephenson | 1989-08-15 |