Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857746 | Method for producing an optocoupler | Werner Kuhlmann, Werner Spaeth, Guenter Waitl | 1989-08-15 |
| 4284898 | High voltage stable optical coupler | Gerfried Felkel | 1981-08-18 |