Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696359 | Portable loudspeaker/directional microphone peripheral | Christopher Todd Welsh | 1997-12-09 |
| 5651074 | Noise canceling gradient microphone assembly | John Charles Baumhauer, Jr. | 1997-07-22 |