Granted Patent
Utility
US 6,449,261 · App. 09/117,907
Time division duplexed multicarrier transmission
Inventor:
Leslie Derek Humphrey
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Aug 10, 1998
Inventor
Leslie Derek Humphrey
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.