Granted Patent
Utility
US 5,132,597 · App. 07/675,584
Hollow cathode plasma switch with magnetic field
Inventors:
Dan M. Goebel, Robert L. Poeschel, Robert W. Schumacher, Julius Hyman, Jr.
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Mar 26, 1991
Inventors
Dan M. Goebel
Robert L. Poeschel
Robert W. Schumacher
Julius Hyman, Jr.
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.