Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4708211 | Reversible air-operated percussive action machine for driving holes in the ground | Evgeny I. Shemyakin, Veniamin V. Kamensky, Alexandr D. Kostylev, Sergei K. Tupitsyn, Konstantin K. Tupitsyn +2 more | 1987-11-24 |
| 4291774 | Rock-breaking implement for percussive machines | Veniamin V. Kamensky, Eduard P. Varnello, Sergei K. Tupitsyn | 1981-09-29 |
| 4280573 | Rock-breaking tool for percussive-action machines | Veniamin V. Kamensky, Eduard P. Varnello, Sergei K. Tupitsyn, Konstantin K. Tupitsyn | 1981-07-28 |
| 4214638 | Method of controlling the reversing of a device for driving holes in earth and device for performing same | Khaim B. Tkach, Alexandr D. Kostylev, Veniamin V. Kamensky, Konstantin K. Tupitsyn, Vladimir M. Terin | 1980-07-29 |
| 4209070 | Air-operated self-propelling rotary-percussive downhole drill | Veniamin V. Kamensky, Eduard P. Varnello, Sergei K. Tupitsyn, Boris V. Nazarov | 1980-06-24 |