Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4628575 | Method and apparatus for welding turbine rotor shafts | Oleg Klufas, William V. Coll | 1986-12-16 |
| 4581816 | Method and apparatus for welding turbine rotor shafts | Oleg Klufas, William V. Coll | 1986-04-15 |