Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4398609 | Apparatus for sinking wells in the ground | Andron T. Karavaev, Vladimir D. Plavskikh, Alexei D. Terskov, Nikolai P. Chepurnoi, Evgeny N. Cherednikov | 1983-08-16 |
| 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 |