Granted Patent
Utility
US 5,155,052 · App. 07/715,286
Vertical field effect transistor with improved control of low resistivity region geometry
Inventor:
Robert B. Davies
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Jun 14, 1991
Inventor
Robert B. Davies
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.