Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5856776 | Method and apparatus for signal coupling at medium voltage in a power line carrier communications system | Donald Armstrong, Nigal John Halse, Joseph A. Wells | 1999-01-05 |
| 5731765 | Mains signalling systems | Robert Joseph Allison, David Roger Scholefield | 1998-03-24 |