Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4377834 | Multiphase blocking circuitry for electrical power supply networks | Leif Eriksson | 1983-03-22 |
| 4351011 | Directional wave detector apparatus | — | 1982-09-21 |
| 4296452 | Multiphase fault protection circuitry with variable functional level detection | Leif Eriksson | 1981-10-20 |
| 4254444 | Multiphase undervoltage tripping circuitry for electrical power supply networks | Leif Eriksson | 1981-03-03 |