Granted Patent
Utility
US 4,882,659 · App. 07/287,208
Vacuum fluorescent display having integral backlit graphic patterns
Inventor:
Jeffrey M. Gloudemans
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Dec 21, 1988
Inventor
Jeffrey M. Gloudemans
Assignee (at issue)
DELCO ELECTRONICS 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.