Granted Patent
Utility
US 6,404,773 · App. 09/114,778
Carrying speech-band signals over a power line communications system
Inventors:
Roy L. Williams, Robin Paul Rickard, Martin Brent Daniells
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Jul 13, 1998
Inventors
Roy L. Williams
Robin Paul Rickard
Martin Brent Daniells
Assignee (at issue)
Nortel Networks Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.