Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4184363 | Method of and apparatus for measuring the thickness of one liquid overlying another | Grigor D. Vassilev, Zdravko A. Yordanov, Lyubomir A. Stoyanov, Kosta M. Kostov | 1980-01-22 |