Granted Patent
Utility
US 5,841,221 · App. 08/835,427
Collector for an electron beam tube
Inventor:
Alan Griggs
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Apr 9, 1997
Inventor
Alan Griggs
Assignee (at issue)
EEV Limited
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.