Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4787549 | Automatic pipe inspection and repair system | John D. Lydick | 1988-11-29 |
| 4634273 | O-ring inspection method | Ronald K. Farleman, Charles W. Fetheroff | 1987-01-06 |
| 4567747 | Self-calibration system for ultrasonic inspection apparatus | — | 1986-02-04 |
| 4545249 | Acoustical position gage | — | 1985-10-08 |
| 4523468 | Phased array inspection of cylindrical objects | Thomas Derkacs, Stephan D. Murphy, John Touhalisky | 1985-06-18 |
| 4411940 | Airfoil | Thomas Derkacs, Charles W. Fetheroff, Istvan Toth | 1983-10-25 |
| 4358471 | Control apparatus | Thomas Derkacs, Charles W. Fetheroff, Istvan Toth | 1982-11-09 |
| 4334495 | Method and apparatus for use in making an object | Thomas Derkacs, Charles W. Fetheroff, Istvan Toth | 1982-06-15 |