Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7866296 | Rotary piston machine with an oval rotary piston | — | 2011-01-11 |
| 7117840 | Rotary piston machine with an oval rotary piston guided in an oval chamber | Lev Levitin | 2006-10-10 |
| 6983729 | Rotary piston machine | Lev Levitin, Naum Kruk | 2006-01-10 |
| 6910397 | Toothing assembly | Naum Kruk, Lev Levitin | 2005-06-28 |