| 4819741 |
Reversiele percussion device |
Alexei D. Terskov, Alexandr D. Kostylev, Nikolai Grigorievich Nazarov, Nikolai P. Chepurnoi, Evgeny N. Cherednikov +1 more |
1989-04-11 |
| 4785898 |
Device for making holes in soil |
Alexandr D. Kostylev, Alexei D. Terskov, Konstantin B. Skachkov |
1988-11-22 |
| 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 |
| 4697647 |
Reversible percussive action machine |
Alexandr D. Kostylev, Konstantin B. Skachkov, Alexei D. Terskov, Igor I. Reznikov, Vladimir I. Tarasenko |
1987-10-06 |
| 4629008 |
Reversible percussive action machine |
Alexandr D. Kostylev, Alexei D. Terskov, Nikolai P. Chepurnoi, Mikhail J. Bondar, Igor I. Reznikov +1 more |
1986-12-16 |
| 4570723 |
Machine for driving holes in the ground |
Alexandr D. Kostylev, Andron T. Karavaev, Alexei D. Terskov, Nikolai P. Chepurnoi, Igor I. Reznikov +1 more |
1986-02-18 |
| 4398609 |
Apparatus for sinking wells in the ground |
Andron T. Karavaev, Alexei D. Terskov, Anatoly V. Sukhushin, Nikolai P. Chepurnoi, Evgeny N. Cherednikov |
1983-08-16 |
| 4181484 |
Device for forming underground pipelines |
Alexandr D. Kostylev, Konstantin Stepanovich Gurkov, Vladimir V. Klimashko, Leonid Rozhkov, Vladimir A. Grigoraschenko +4 more |
1980-01-01 |