Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882902 | Turbine cooling air transferring apparatus | James R. Reigel, Robert J. Corsmeier, James H. Bertke | 1989-11-28 |
| 4809498 | Gas turbine engine | Rollin George Giffin | 1989-03-07 |
| 4807433 | Turbine cooling air modulation | Harvey M. Maclin | 1989-02-28 |