Granted Patent
Utility
US 5,834,898 · App. 08/811,394
High power current regulating switch tube with a hollow electron beam
Inventor:
Richard B. True
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Mar 4, 1997
Inventor
Richard B. True
Assignee (at issue)
Litton Systems, 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.