Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5326077 | Butterfly valve seal retainer | William R. Spencer | 1994-07-05 | $18,071,000 |
| 5242265 | Aircraft pitch change mechanism | Petr Hora, Thomas C. Hermans, David Edward Bulman, Thomas G. Wakeman, David L. Joyce | 1993-09-07 | $15,507,000 |
| 5213471 | Propeller pitch control | Robert L. Roberts, Petr Hora, David L. Joyce, John S. Mears | 1993-05-25 | $8,883,000 |
| 5174716 | Pitch change mechanism | Petr Hora | 1992-12-29 | $9,695,000 |
| 4318667 | Actuating mechanism for fluid pump inlet closure valve | — | 1982-03-09 | $1,331,000 |