Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691691 | Power-line communication system using pulse transmission on the AC line | John G. Konopka | 1997-11-25 |
| 5689230 | Energy monitoring and control system using reverse transmission on AC line | Philip D. Gunderson, Dennis L. Stephens, Steven Purdy | 1997-11-18 |