Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5832077 | Microphone/loudspeaker having a speakerphone mode and a microphone/loudspeaker mode | — | 1998-11-03 |
| 5625697 | Microphone selection process for use in a multiple microphone voice actuated switching system | Donald J. Bowen | 1997-04-29 |