Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870351 | Electronic watt-hour meter with up and down integration for error correction | — | 1989-09-26 |
| 4859937 | Pulse width modulator in an electronic watt-hour meter with up and down integration for error correction | — | 1989-08-22 |
| 4808942 | Continuous mode auto-zero offset amplifier or integrator | — | 1989-02-28 |
| 4800333 | Switched-capacitor watthour meter circuit having reduced capacitor ratio | — | 1989-01-24 |