Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8300369 | System and method for polyphase ground-fault circuit-interrupters | — | 2012-10-30 |
| 7301739 | Ground-fault circuit-interrupter system for three-phase electrical power systems | — | 2007-11-27 |
| 7124906 | Apparatus and method for protecting floating roof tanks from the effects of lightning strikes | William J. Johnston | 2006-10-24 |