Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9692372 | Amplifier for electrostatic transducers | Brian Atkins, Duncan Billson | 2017-06-27 |
| 9503821 | Electrostatic transducer | Brian Atkins, Duncan Billson | 2016-11-22 |
| D434819 | Golf putter head | — | 2000-12-05 |