Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610691 | Voice prosthesis device | William A. Depel, Bernd Weinberg | 1986-09-09 |
| 4582058 | Tracheostoma valves | William A. Depel, Bernd Weinberg | 1986-04-15 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610691 | Voice prosthesis device | William A. Depel, Bernd Weinberg | 1986-09-09 |
| 4582058 | Tracheostoma valves | William A. Depel, Bernd Weinberg | 1986-04-15 |