Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853386 | N.sup.6 -disubstituted purine derivatives, and pharmaceutical compositions containing them, useful for treating allergic diseases, bronchospastic and bronchoconstrictory conditions | Walter-Gunar Friebe | 1989-08-01 |