Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D573588 | Assistive listening device | Daniel Warren, Clifford Ryan Grounds, Thomas Joschika | 2008-07-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D573588 | Assistive listening device | Daniel Warren, Clifford Ryan Grounds, Thomas Joschika | 2008-07-22 |