Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884642 | Percussive action machine | Petr Y. Fadeev, Vladimir Y. Fadeev, Rim A. Kulagin, Nikolai P. Ermilov | 1989-12-05 |
| 4370916 | Percussive device | Leonid A. Mitin, Vladislav V. Mitrofanov, Vladimir Y. Fadeev, Petr Y. Fadeev, Rim A. Kulagin +4 more | 1983-02-01 |
| 4343368 | Idle stroke braking unit for an impact device | Vladimir Y. Fadeev, Petr Y. Fadeeve, Rim A. Kulagin, Nikolai P. Ermilov | 1982-08-10 |
| 4300802 | Apparatus for drifting openings in hard rock | Leonid A. Mitin, Petr Y. Fadeev, Leonid F. Ponomarev, Vladimir Y. Fadeev, Vyacheslav F. Rybert +10 more | 1981-11-17 |
| 4251113 | Hammer for breaking strong abrasive materials | Leonid A. Mitin, Petr Y. Fadeev, Vladimir Y. Fadeev, Rim A. Kulagin, Nikolai P. Ermilov | 1981-02-17 |