Granted Patent
Utility
US 5,673,292 · App. 08/718,253
AM-PSK system for broadcasting a composite analog and digital signal using adaptive M-ary PSK modulation
Inventor:
Barry W. Carlin
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Sep 20, 1996
Inventor
Barry W. Carlin
Assignee (at issue)
NORTHROP GRUMMAN CORPORATION
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.