Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11016127 | Apparatus for measuring DC leakage current and method of use | David James Ball | 2021-05-25 |
| 10620256 | Direct current meter employing waveform separator for detecting leakage current | Zoran Bilic, David James Ball | 2020-04-14 |
| 10254316 | Apparatus for measuring DC leakage current and method of use | David James Ball | 2019-04-09 |