Granted Patent
Utility
US 4,631,735 · App. 06/687,205
Coded modulation system with feedback
Inventor:
Shahid U. H. Qureshi
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Dec 28, 1984
Inventor
Shahid U. H. Qureshi
Assignee (at issue)
Codex 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.