Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8203235 | AC and DC uninterruptible online power supplies | Bret P. Fox, Peter A. Panfil, Russell E. Shelter, Jr. | 2012-06-19 |
| 7888818 | Substation based high voltage uninterruptible power supply | James K. Martin | 2011-02-15 |
| 7864552 | Intelligent sensorless control of a phase controlled rectifier | Brian P. Heber, Xian Chen | 2011-01-04 |
| 7566988 | Method and apparatus for monitoring UPS power sources | Brian P. Heber, Terry D. Bush, Mohammad Nanda Rahmana Marwali | 2009-07-28 |
| 7280355 | Apparatus for use with laptop computer | — | 2007-10-09 |
| 7207403 | Transportable power wheelchair | Christopher Grymko, Gerald White | 2007-04-24 |
| D491115 | Power wheelchair | — | 2004-06-08 |