Granted Patent
Utility
US 5,869,802 · App. 08/770,316
Plasma producing structure
Inventors:
John E. Spencer, Robert Westmoreland, Thomas D. Mantei
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Dec 20, 1996
Inventors
John E. Spencer
Robert Westmoreland
Thomas D. Mantei
Assignees (at issue)
Plasma Quest Limited
University of Cincinnati
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.