Granted Patent
Utility
US 5,656,883 · App. 08/692,591
Field emission devices with improved field emission surfaces
Inventor:
Alton O. Christensen
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Aug 6, 1996
Inventor
Alton O. Christensen
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.