Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5261789 | Tip cooled blade | John G. Nourse, Robert C. Simmons | 1993-11-16 |
| 5232343 | Turbine blade | — | 1993-08-03 |
DB
Don Butts
Overall (All Time): #2,303,531 of 4,157,543Top 60%
2
Patents All Time