Granted Patent
Utility
US 4,958,209 · App. 07/348,256
Varicap diode structure
Inventor:
George H. S. Rokos
Patented Case
View Patent ↗
Granted: Sep 18, 1990
Filed: May 5, 1989
Inventor
George H. S. Rokos
Assignee (at issue)
STC PLC
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.