Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12368797 | Telephone line testing apparatus with remote control | Andrew Vincent Johnson, Alan L. Johnson | 2025-07-22 |
| 12352251 | Energy harvesting system for collecting energy from transportation infrastructures | — | 2025-07-08 |
| 9898026 | Power distribution apparatus with input and output power sensing and method of use | Carrel W. Ewing, James P. Maskaly, Dennis W. McGlumphy, Brian P. Auclair, David Massey +3 more | 2018-02-20 |
| 8305737 | Power distribution apparatus with input and output power sensing and method of use | Carrel W. Ewing, James P. Maskaly, Dennis W. McGlumphy, Brian P. Auclair, David Massey +3 more | 2012-11-06 |
| 7224740 | Low frequency bilateral communication over distributed power lines | — | 2007-05-29 |
| 6177884 | Integrated power line metering and communication method and apparatus | Steven Burnham | 2001-01-23 |
| 6154488 | Low frequency bilateral communication over distributed power lines | — | 2000-11-28 |
| 5581229 | Communication system for a power distribution line | — | 1996-12-03 |
| 5467011 | System for detection of the phase of an electrical signal on an alternating circuit power line | — | 1995-11-14 |
| 5107712 | Modular jack spring conductor force measuring probe | Michael D. Field | 1992-04-28 |
| 4967064 | Method and apparatus for a target determining apparatus having increased range | Bruce F. Field | 1990-10-30 |
| 4782518 | Apparatus for converting distinctive ring to selective ring in telephone lines | Danny G. Mattley | 1988-11-01 |