Granted Patent
Utility
US 5,134,337 · App. 07/726,139
Projection lens assembly for planar electron source
Inventors:
Keith F. Kongslie, Gary A. Nelson, Duncan HUGHES
Patented Case
View Patent ↗
Granted: Jul 28, 1992
Filed: Jul 5, 1991
Inventors
Keith F. Kongslie
Gary A. Nelson
Duncan HUGHES
Assignee (at issue)
Tektronix, 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.