Granted Patent
Utility
US 5,325,612 · App. 08/079,066
Shoe with improved dual hardness heel-lift
Inventors:
Barry W. Lock, William J. Scholl
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Jun 16, 1993
Inventors
Barry W. Lock
William J. Scholl
Assignee (at issue)
Nine West Group, 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.