Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5046902 | Spiral drill | Alexei V. Zubov, Vladimir Zubkov, Anatoly Evgenievich Volkov | 1991-09-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5046902 | Spiral drill | Alexei V. Zubov, Vladimir Zubkov, Anatoly Evgenievich Volkov | 1991-09-10 |