Granted Patent
Utility
US 4,290,028 · App. 06/061,723
High speed phase locked loop frequency synthesizer
Inventor:
Jesse S. LeGrand
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Jul 30, 1979
Inventor
Jesse S. LeGrand
Assignee (at issue)
International Telephone and Telegraph 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.