Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5004056 | Percussion-rotary drilling tool | Yakov A. Goikhman, Georgy M. Krjukov, Georgy M. Sorokin, Alexei Filatov, Viktor V. Tsarapkin +6 more | 1991-04-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5004056 | Percussion-rotary drilling tool | Yakov A. Goikhman, Georgy M. Krjukov, Georgy M. Sorokin, Alexei Filatov, Viktor V. Tsarapkin +6 more | 1991-04-02 |