Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8666085 | Component for noise reducing earphone | Mark Donaldson, Andre Steyn, Pierre Guiu, William James Sim | 2014-03-04 |
| 8571227 | Noise cancellation earphone | Mark Donaldson | 2013-10-29 |