Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4300811 | III-V Direct-bandgap semiconductor optical filter | Michael Ettenberg | 1981-11-17 |
| 4228349 | III-V Direct-bandgap semiconductor optical filter | Michael Ettenberg | 1980-10-14 |