Granted Patent
Utility
US 5,535,994 · App. 08/159,170
Composite air spring piston
Inventor:
Carl Kenneth Safreed, Jr.
Patented Case
View Patent ↗
Granted: Jul 16, 1996
Filed: Nov 30, 1993
Inventor
Carl Kenneth Safreed, Jr.
Assignee (at issue)
THE GOODYEAR TIRE & RUBBER 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.