Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7784563 | Method, drilling machine, drill bit and bottom hole assembly for drilling by electrical discharge by electrical discharge pulses | Vladimir Lopatin, Vasili M. Muratov, Vladislav F. Vajov | 2010-08-31 |