Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7038780 | Method for sensing acoustic energy | Joseph L. Chovan, Donald Winfield, William A. Penn, Walter Beeman | 2006-05-02 |
| 6924895 | Sensor for optically sensing air borne acoustic waves | Joseph L. Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William A. Penn, William Pattee Whyland | 2005-08-02 |
| 6714306 | Sensor for optically sensing air borne acoustic waves | Joseph L. Chovan, Martin Francis Lowry, Evelyn Hope Monsay, William A. Penn, William Pattee Whyland | 2004-03-30 |
| 4226533 | Optical particle detector | — | 1980-10-07 |