Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234860 | Piezoelectric filter and process for the manufacture thereof | Heinz O. Schumacher | 1980-11-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234860 | Piezoelectric filter and process for the manufacture thereof | Heinz O. Schumacher | 1980-11-18 |