Granted Patent
Utility
US 6,407,495 · App. 09/275,109
Electron beam tube having particular structure of the vacuum envelope containing electron gun
Inventors:
Steven Bardell, Steven Aitken
Patented Case
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Granted: Jun 18, 2002
Filed: Mar 24, 1999
Inventors
Steven Bardell
Steven Aitken
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.