Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6347147 | High noise suppression microphone | Edward F. Downs, Jr. | 2002-02-12 |
| 6222928 | Universal impedance matcher for a microphone-to-radio connection | Edward F. Downs, Jr. | 2001-04-24 |
| 6104816 | High noise communication system | Edward F. Downs, Jr. | 2000-08-15 |