Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349902 | Piezoelectric transducer for recording video information | John Valachovic, Gerard A. Alphonse, Karl-Friedrich Etzold | 1982-09-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349902 | Piezoelectric transducer for recording video information | John Valachovic, Gerard A. Alphonse, Karl-Friedrich Etzold | 1982-09-14 |