Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6937159 | Downhole telemetry and control system using orthogonal frequency division multiplexing | Lawrence W. Hill | 2005-08-30 |
| 6898149 | Reprogrammable downhole telemetry and control system | Lawrence W. Hill | 2005-05-24 |
| 6747569 | Downhole telemetry and control system | Lawrence W. Hill | 2004-06-08 |
| 6411483 | Hiccup-mode current protection circuit for switching regulator | John DeGregorio | 2002-06-25 |
| 6359426 | Voltage threshold circuit for power conditioner | John DeGregorio | 2002-03-19 |