Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307629 | Variable pitch stator with passive control | Robert Romany By, Gelsino J. Volpe | 1994-05-03 |
| 5263319 | Efficient variable pitch stator with passive control | Robert Romany By, Gelsino J. Volpe | 1993-11-23 |