Granted Patent
Utility
US 5,151,663 · App. 07/644,781
Plasma switch devices
Inventor:
Robin J. Harvey
Patented Case
View Patent ↗
Granted: Sep 29, 1992
Filed: Feb 21, 1991
Inventor
Robin J. Harvey
Assignee (at issue)
Hughes Aircraft Company
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.