Granted Patent
Utility
US 5,151,758 · App. 07/657,918
Planar-doped valley field effect transistor (PDVFET)
Inventor:
Thane Smith
Patented Case
View Patent ↗
Granted: Sep 29, 1992
Filed: Feb 20, 1991
Inventor
Thane Smith
Assignee (at issue)
Comsat, 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.