Granted Patent
Utility
US 4,262,264 · App. 06/012,878
Apparatus and method for achieving acquisition and maintaining lock in a phase locked loop
Inventor:
Johannes J. Vandegraaf
Patented Case
View Patent ↗
Granted: Apr 14, 1981
Filed: Feb 16, 1979
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.