Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845939 | Gas turbine engine with bypass diverter means | John M. Hall | 1989-07-11 |
| 4821979 | Variable area exhaust nozzle for a gas turbine engine | Ralph M. Denning, John M. Hall | 1989-04-18 |