Granted Patent
Utility
US 4,943,786 · App. 07/240,425
Digital control of phase locked loops
Inventors:
Brian Cordwell, Paul M. Hayes
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Sep 1, 1988
Inventors
Brian Cordwell
Paul M. Hayes
Assignee (at issue)
Plessey Overseas 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.