Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4594372 | Polyvinyl chloride composition | Stefanka V. Vassileva, Hristo B. Kotchev, Zvetan S. Djagarov, Nikola N. Popov | 1986-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4594372 | Polyvinyl chloride composition | Stefanka V. Vassileva, Hristo B. Kotchev, Zvetan S. Djagarov, Nikola N. Popov | 1986-06-10 |