Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4742548 | Unidirectional second order gradient microphone | James E. West | 1988-05-03 |
| 4675906 | Second order toroidal microphone | James E. West | 1987-06-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4742548 | Unidirectional second order gradient microphone | James E. West | 1988-05-03 |
| 4675906 | Second order toroidal microphone | James E. West | 1987-06-23 |