| 4964477 |
Pneumatic percussive device |
Sergei K. Tupitsyn, Veniamin V. Kamensky, Kiselev N. Jurievich |
1990-10-23 |
| 4733731 |
Air-operated reversible percussive action machine |
Khaim B. Tkach, Alexandr D. Kostylev, Mikhail J. Bondar, Vladimir I. Tarasenko, Igor I. Reznikov |
1988-03-29 |
| 4708211 |
Reversible air-operated percussive action machine for driving holes in the ground |
Evgeny I. Shemyakin, Veniamin V. Kamensky, Alexandr D. Kostylev, Boris V. Sudnishnikov, Sergei K. Tupitsyn +2 more |
1987-11-24 |
| 4690225 |
Percussive tool |
Sergei K. Tupitsyn, Alexandr D. Kostylev, Veniamin V. Kamensky, Sergei A. Chufistov |
1987-09-01 |
| 4363365 |
Impact tool with damping chambers |
Igor Nikolaev, Vladimir A. Evpolov, Lidia M. Dronova, Anatoly I. Lednikov, Mikhail A. Moskvin +5 more |
1982-12-14 |
| 4280573 |
Rock-breaking tool for percussive-action machines |
Boris V. Sudnishnikov, Veniamin V. Kamensky, Eduard P. Varnello, Sergei K. Tupitsyn |
1981-07-28 |
| 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, Vladimir M. Terin |
1980-07-29 |