Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4676716 | Hydraulic multistage turbine of turbodrill | Vigdor S. Budyansky, Viktor A. Filimonov | 1987-06-30 |
| 4606700 | Turbodrill multistage turbine | Vigdor S. Budyansky, Viktor K. Sorokoumov, Viktor A. Filimonov | 1986-08-19 |