Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9943712 | Communication and speech enhancement system | John C. Hamilton, Charles G. Sproule, IV | 2018-04-17 |
| 9344781 | Communication and speech enhancement system | John C. Hamilton | 2016-05-17 |