Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887663 | Hot gas duct liner | James B. Rannie, Robert E. Field | 1989-12-19 |
| 4864828 | Aircraft engine combustion liner cooling apparatus | Alfred P. Matheny | 1989-09-12 |
| 4820122 | Dirt removal means for air cooled blades | Kenneth B. Hall, Wesley D. Brown | 1989-04-11 |