Granted Patent
Utility
US 4,871,979 · App. 07/080,957
Variable frequency system having linear combination of charge pump and voltage controlled oscillator
Inventors:
Gerald W. Shearer, Karl M. J. Lofgren, Kenneth W. Ouyang
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Aug 3, 1987
Inventors
Gerald W. Shearer
Karl M. J. Lofgren
Kenneth W. Ouyang
Assignee (at issue)
Western Digital
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.