Granted Patent
Utility
US 6,134,261 · App. 09/035,286
FDD forward link beamforming method for a FDD communications system
Inventor:
David James Ryan
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Mar 5, 1998
Inventor
David James Ryan
Assignee (at issue)
AT&T Wireless Svcs. Inc.
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.