Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7117840 | Rotary piston machine with an oval rotary piston guided in an oval chamber | Boris Schapiro | 2006-10-10 |
| 6983729 | Rotary piston machine | Boris Schapiro, Naum Kruk | 2006-01-10 |
| 6910397 | Toothing assembly | Boris Schapiro, Naum Kruk | 2005-06-28 |
| 5134618 | Method of testing connecting and/or switching devices and/or lines | Hans Jurgen Matt, Mark Karpovsky | 1992-07-28 |