Granted Patent
Utility
US 4,146,787 · App. 05/769,696
Methods and apparatus for energy analysis and energy filtering of secondary ions and electrons
Inventor:
Wade L. Fite
Patented Case
View Patent ↗
Granted: Mar 27, 1979
Filed: Feb 17, 1977
Inventor
Wade L. Fite
Assignee (at issue)
Extranuclear Laboratories, 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.