Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856272 | Method for maintaining blade tip clearance | Robert L. Putman | 1989-08-15 |
| 4820116 | Turbine cooling for gas turbine engine | Guilford E. Stephens, Samuel C. Peele | 1989-04-11 |