Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4248108 | Lathe | David N. Tverskoi, Alexandr G. Kashirsky, Dmitry N. Trofimov | 1981-02-03 |
| 4246813 | Straight turning automatic lathe | Konstantin A. Grachev, David N. Tverskoi | 1981-01-27 |