Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272647 | Speech aid apparatus | Ivar Veit, Konstantin Gatzsch | 1981-06-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272647 | Speech aid apparatus | Ivar Veit, Konstantin Gatzsch | 1981-06-09 |