Granted Patent
Utility
US 4,409,563 · App. 06/238,655
Phase locked loop frequency synthesizer with frequency compression loop
Inventor:
Johannes J. Vandegraaf
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Feb 26, 1981
Inventor
Johannes J. Vandegraaf
Assignee (at issue)
General Electric Company
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.