Granted Patent
Utility
US 4,311,964 · App. 06/077,824
Coherent phase shift keyed demodulator for power line communication systems
Inventor:
John R. Boykin
Patented Case
View Patent ↗
Granted: Jan 19, 1982
Filed: Sep 21, 1979
Inventor
John R. Boykin
Assignee (at issue)
Westinghouse Electric Company 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.