Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4777649 | Acoustic feedback control of microphone positioning and speaking volume | Ronald E. Carlson, Sr. | 1988-10-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4777649 | Acoustic feedback control of microphone positioning and speaking volume | Ronald E. Carlson, Sr. | 1988-10-11 |