Granted Patent
Utility
US 4,355,404 · App. 06/153,289
Carrier recovery network for QPSK modems employing synchronized oscillators
Inventor:
Vasil Uzunoglu
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: May 27, 1980
Inventor
Vasil Uzunoglu
Assignee (at issue)
Communications Satellite 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.