Granted Patent
Utility
US 4,790,472 · App. 07/013,219
Methods for manufacturing a toroidal pressure vessel
Inventor:
Bela Bunkoczy
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Feb 6, 1987
Inventor
Bela Bunkoczy
Assignee (at issue)
AlliedSignal, Inc.
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.