Granted Patent
Utility
US 4,315,195 · App. 06/147,447
High-voltage supply for power electron-beam guns
Inventors:
Karl-Georg Redel, Gerd Deppisch
Patented Case
View Patent ↗
Granted: Feb 9, 1982
Filed: May 7, 1980
Inventors
Karl-Georg Redel
Gerd Deppisch
Assignee (at issue)
Leybold-Heraeus GmbH
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.