Granted Patent
Utility
US 4,338,548 · App. 06/116,895
Unipotential lens assembly for charged particle beam tubes and method for applying correction potentials thereto
Inventors:
David Bono, Marvin Fishbein, Kenneth J. Harte
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Jan 30, 1980
Inventors
David Bono
Marvin Fishbein
Kenneth J. Harte
Assignee (at issue)
Control Data 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.