Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342925 | Circuit arrangement for interruption-free voltage switching | — | 1982-08-03 |
| 4297632 | Device for monitoring lamp failure in airport navigation lighting | Helmut Glaser | 1981-10-27 |
| 4242638 | Circuit for monitoring the square of the RMS value of a periodic signal | Helmut Glaser | 1980-12-30 |