Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947941 | Single-stroke pneumatic apparatus | Andrei A. Zelentsov | 1990-08-14 |
| 4867252 | Single-stroke pneumatic apparatus | Andrei A. Zelentsov | 1989-09-19 |
| 4850437 | Single-blow pneumatic percussive tool | Andrei A. Zelentsov | 1989-07-25 |