Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695323 | Aerodynamically optimized mid-span snubber for combustion turbine blade | Nathan Pfeifer, Wally N. Dangerfield | 1997-12-09 |
| 4230190 | Blow out preventer handling system | David C. Guinn, Archie K. Haggard | 1980-10-28 |