Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7042811 | Frictionless, non-destructive playback system for cylinder recordings | Frederick Phelps | 2006-05-09 |
| 7038780 | Method for sensing acoustic energy | Joseph L. Chovan, Donald Winfield, Lawrence Richard Snowman, Walter Beeman | 2006-05-02 |
| 6924895 | Sensor for optically sensing air borne acoustic waves | Joseph L. Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William Pattee Whyland, Lawrence Richard Snowman | 2005-08-02 |
| 6714306 | Sensor for optically sensing air borne acoustic waves | Joseph L. Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William Pattee Whyland, Lawrence Richard Snowman | 2004-03-30 |
| 5126977 | Optical calibration of wide aperture array | James W. Stauffer | 1992-06-30 |
| 5117400 | Optical calibration of towed sensor array | Donald Winfield | 1992-05-26 |
| 4974920 | Electronic holographic apparatus | Joseph L. Chovan, Jerome J. Tiemann, William E. Engeler | 1990-12-04 |
| 4608569 | Adaptive signal processor for interference cancellation | Frank R. Dickey, Jr. | 1986-08-26 |