Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440240 | Method of making holes in the soil and apparatus for performing this method | Alexandr D. Kostylev, Vladimir P. Gileta, Vladimir A. Grigoraschenko, Khaim B. Tkach, Valery Y. Frenkel +12 more | 1984-04-03 |
| 4369002 | Method of emptying pipes driven into earth in nontrench laying and device for carrying same into effect | Alexandr D. Kostylev, Vladimir P. Gileta, Vladimir A. Grigoraschenko, Khaim B. Tkach, Valery A. Kozlov +2 more | 1983-01-18 |