Granted Patent
Utility
US 4,346,420 · App. 06/153,987
Magnetoplasmadynamic switch
Inventor:
Peter J. Turchi
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: May 28, 1980
Inventor
Peter J. Turchi
Assignee (at issue)
The United States of America, as represented by the Secretary of the Navy
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.