Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4637476 | Percussive action machine for making holes in the ground | Alexandr D. Kostylev, Gennady A. Tkachenko, Ivan P. Leonov, Vladimir V. Klimashko | 1987-01-20 |
| 4181484 | Device for forming underground pipelines | Alexandr D. Kostylev, Vladimir D. Plavskikh, Vladimir V. Klimashko, Leonid Rozhkov, Vladimir A. Grigoraschenko +4 more | 1980-01-01 |