Granted Patent
Utility
US 5,414,238 · App. 07/956,130
Resonant power supply for an arcjet thruster
Inventors:
Robert Louis Steigerwald, John Norton Park
Patented Case
View Patent ↗
Granted: May 9, 1995
Filed: Oct 2, 1992
Inventors
Robert Louis Steigerwald
John Norton Park
Assignee (at issue)
LOCKHEED MARTIN 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.