Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4214638 | Method of controlling the reversing of a device for driving holes in earth and device for performing same | Boris V. Sudnishnikov, Khaim B. Tkach, Alexandr D. Kostylev, Veniamin V. Kamensky, Konstantin K. Tupitsyn | 1980-07-29 |