Granted Patent
Utility
US 4,392,113 · App. 06/233,904
Phase-locked loop including non-linear phase detector of the sample and hold type
Inventor:
Charles R. Jackson
Patented Case
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Granted: Jul 5, 1983
Filed: Feb 12, 1981
Inventor
Charles R. Jackson
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.