Granted Patent
Utility
US 5,117,149 · App. 07/521,017
Parallel plate electron multiplier with negatively charged focussing strips and method of operation
Inventor:
John J. Fijol
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: May 9, 1990
Inventor
John J. Fijol
Assignee (at issue)
Galileo Electro-Optics Corporation
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.