Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4261500 | Modular apparatus for the feeding of electrode wire through great distances | David A. Samokovliski, Petko Kostadinov Grozdanov, Simeon G. Punchev, Steryu N. Dengubov | 1981-04-14 |
| 4205771 | Electrode wire-feeding device having means for automatically adjusting the pushing force for the electrode wire | David A. Samokovliski, Petko Kostadinov Grozdanov, Simeon G. Punchev, Peter D. Petrov | 1980-06-03 |