Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D912647 | Earbud | Paul C. Williamson, Jingwei Dang, Donna Marie Sullivan, Christopher Ratcliffe | 2021-03-09 |
| 10827247 | Earphone | Richard Arthur Grebe, Donna Marie Sullivan, Christopher Ratcliffe, Daniel H. Sargent | 2020-11-03 |
| 10701472 | Earbud charging case | Zhen Xu, Donna Marie Sullivan, Daniel H. Sargent, Richard Arthur Grebe | 2020-06-30 |