Granted Patent
Utility
US 4,922,800 · App. 07/255,708
Magnetic slingshot accelerator
Inventor:
Alan L. Hoffman
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Oct 7, 1988
Inventor
Alan L. Hoffman
Assignee (at issue)
Amoco 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.