Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10804703 | Waveform separator apparatus and method for detecting leakage current in high voltage direct current power systems | David James Ball | 2020-10-13 |
| 10620256 | Direct current meter employing waveform separator for detecting leakage current | David James Ball, Donald William McLennan | 2020-04-14 |