Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4899502 | Building or structure erected on a slope | Semen P. Valts, Alexei N. Stepanenko, Alexandr N. Tetior, Karim P. Fen, Alexandr M. Lekhno +4 more | 1990-02-13 |
| 4796398 | Foundation of a building or installation erected across a ravine extending along a slope | Semen P. Valts, Alexandr M. Lekhno, Alexandr N. Tetior, Boris J. Barykin | 1989-01-10 |