| 5749677 |
Apparatus for impact action |
Vladimir Alexandrovich Grigoraschenko, Vladimir Alexeevich Klimenko, Mikhail Vladimirovich Kurlenya, Vladimir Dmitrievich Plavskih, Anatoly Antonovich Repin +2 more |
1998-05-12 |
| 4964477 |
Pneumatic percussive device |
Konstantin K. Tupitsyn, Sergei K. Tupitsyn, Kiselev N. Jurievich |
1990-10-23 |
| 4708211 |
Reversible air-operated percussive action machine for driving holes in the ground |
Evgeny I. Shemyakin, Alexandr D. Kostylev, Boris V. Sudnishnikov, Sergei K. Tupitsyn, Konstantin K. Tupitsyn +2 more |
1987-11-24 |
| 4690225 |
Percussive tool |
Konstantin K. Tupitsyn, Sergei K. Tupitsyn, Alexandr D. Kostylev, Sergei A. Chufistov |
1987-09-01 |
| 4291774 |
Rock-breaking implement for percussive machines |
Boris V. Sudnishnikov, Eduard P. Varnello, Sergei K. Tupitsyn |
1981-09-29 |
| 4280573 |
Rock-breaking tool for percussive-action machines |
Boris V. Sudnishnikov, 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 |
Boris V. Sudnishnikov, Khaim B. Tkach, Alexandr D. Kostylev, Konstantin K. Tupitsyn, Vladimir M. Terin |
1980-07-29 |
| 4209070 |
Air-operated self-propelling rotary-percussive downhole drill |
Boris V. Sudnishnikov, Eduard P. Varnello, Sergei K. Tupitsyn, Boris V. Nazarov |
1980-06-24 |