Granted Patent
Utility
US 4,866,404 · App. 07/244,498
Phase locked frequency synthesizer with single input wideband modulation system
Inventor:
Johannes J. Vandegraaf
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Sep 15, 1988
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.