Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6863239 | Fluid conduit for use with hydraulic actuator | — | 2005-03-08 |
| 6644590 | Active system and method for vibration and noise reduction | George G. Zipfel, Jr., William A. Welsh | 2003-11-11 |
| 6634862 | Hydraulic actuator | Ronald G. Ernst | 2003-10-21 |
| 6476534 | Permanent magnet phase-control motor | William Edward Vanderbeck, Ka-Shu Lee, George G. Zipfel, Jr., Victor G. Mishkevich, Thomas Edward Smith | 2002-11-05 |
| 6354536 | Rotor hub mounted actuator for controlling a blade on a rotorcraft | Michael S. Torok, William A. Welsh, George G. Zipfel, Jr., Ka-Shu Lee, William Edward Vanderbeck | 2002-03-12 |
| 5949162 | Unbalanced force generation in motors | Victor G. Mishkevich, George G. Zipfel, Jr. | 1999-09-07 |
| 5942893 | Shielded eddy current sensor for enhanced sensitivity | — | 1999-08-24 |