Granted Patent
Utility
US 6,608,874 · App. 09/005,469
Method and apparatus for quadrature multi-pulse modulation of data for spectrally efficient communication
Inventors:
Bassel F. Beidas, A. Roger Hammons, Jr.
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Jan 12, 1998
Inventors
Bassel F. Beidas
A. Roger Hammons, Jr.
Assignee (at issue)
HUGHES ELECTRONICS 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.