Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |