Granted Patent
Utility
US 4,984,376 · App. 07/366,834
Midsole for footwear
Inventors:
Timothy H. Walter, Thomas M. Pontiff
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Jun 15, 1989
Inventors
Timothy H. Walter
Thomas M. Pontiff
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.