Granted Patent
Utility
US 4,180,924 · App. 05/908,344
Running shoe with wedged sole
Inventor:
Steven I. Subotnick
Patented Case
View Patent ↗
Granted: Jan 1, 1980
Filed: May 22, 1978
Inventor
Steven I. Subotnick
Assignee (at issue)
Brooks Shoe Manufacturing Co., 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.