Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333877 | Substituted 2,7-dioxo-2,7-dihydrobenzo[1:2-b; 5:6-b.sup.1 ]difuran or -dipyrrole dyestuffs, their preparation and their use | John L. Carey, Jr. | 1982-06-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333877 | Substituted 2,7-dioxo-2,7-dihydrobenzo[1:2-b; 5:6-b.sup.1 ]difuran or -dipyrrole dyestuffs, their preparation and their use | John L. Carey, Jr. | 1982-06-08 |