Granted Patent
Utility
US 6,781,555 · App. 10/093,117
Multi-beam antenna communication system and method
Inventors:
Parthasarathy Ramanujam, Harold A. Rosen, Mark T. Austin, William D. Beightol
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Mar 5, 2002
Inventors
Parthasarathy Ramanujam
Harold A. Rosen
Mark T. Austin
William D. Beightol
Assignee (at issue)
DIRECTV, LLC
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.