Granted Patent
Utility
US 6,407,477 · App. 09/895,759
Thermionic modules
Inventors:
Donald B. King, Laurence P. Sadwick, Bernard R. Wernsman
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Jun 28, 2001
Inventors
Donald B. King
Laurence P. Sadwick
Bernard R. Wernsman
Assignee (at issue)
Sandia 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.