Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8446699 | Residual current device having voltage dependent and voltage independent modes of operation | — | 2013-05-21 |
| 8340829 | Method and apparatus of detecting and compensating for DC residual fault currents on electrical systems | — | 2012-12-25 |
| 7755527 | Read and write interface communications protocol for digital-to-analog signal converter with non-volatile memory | Thomas Youbok Lee, Yann Johner, Philippe Gimmel, Tim Sherman, John Austin | 2010-07-13 |
| 7589652 | Read and write interface communications protocol for digital-to-analog signal converter with non-volatile memory | Thomas Youbok Lee, John Austin, Andrew Swaneck, Yann Johner | 2009-09-15 |
| 7468871 | Residual current devices | Andrew Williams | 2008-12-23 |
| 5675841 | Headwear tether | — | 1997-10-14 |