Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305451 | Electroslag remelting and surfacing apparatus | Isidor I. Frumin, Vladimir S. Shirin | 1981-12-15 |
| 4185682 | Electroslag remelting and surfacing apparatus | Isidor I. Frumin, Vladimir S. Shirin | 1980-01-29 |