Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10378439 | Gas turbine engine with variable speed turbines | Syed J. Khalid | 2019-08-13 |
| 10329943 | Split axial-centrifugal compressor | Andrew J. Eifert, Craig Heathco, Robert T. Duge | 2019-06-25 |
| 9982676 | Split axial-centrifugal compressor | Andrew J. Eifert, Craig Heathco, Robert T. Duge | 2018-05-29 |
| 9878798 | Aircraft with counter-rotating turbofan engines | — | 2018-01-30 |
| 8720815 | Aircraft propulsion system | Daniel K. Vetters, David John Howard Eames | 2014-05-13 |
| 8075438 | Apparatus and method for transmitting a rotary input into counter-rotating outputs | Daniel K. Vetters | 2011-12-13 |
| 8021267 | Coupling assembly | Daniel K. Vetters | 2011-09-20 |
| 4642029 | Brake for counter rotating bladed members | — | 1987-02-10 |