Granted Patent
Utility
US 4,903,086 · App. 07/296,862
Varactor tuning diode with inversion layer
Inventor:
Lloyd W. Hackley
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Jan 13, 1989
Inventor
Lloyd W. Hackley
Assignee (at issue)
E-Systems, Inc.
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.