Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4978251 | Method and apparatus for conveying materials in bulk by liquid pressure | Valery P. Drobadenko | 1990-12-18 |
| 4952099 | Device for hydraulic conveyance of loose materials | Valery P. Drobadenko, Vladimir P. Koval, Vladimir I. Sokolov, Boris A. Maltsev | 1990-08-28 |