Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4628427 | D.C. impulse arc welder employing thyristors | Todor Y. Russev | 1986-12-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4628427 | D.C. impulse arc welder employing thyristors | Todor Y. Russev | 1986-12-09 |