Granted Patent
Utility
US 4,802,009 · App. 07/072,935
Digitally controlled phase locked loop system
Inventor:
Werner Hartmeier
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Jul 13, 1987
Inventor
Werner Hartmeier
Assignee (at issue)
RCA Licensing 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.