Granted Patent
Utility
US 5,678,328 · App. 08/565,387
Heel and sole structure with opposite cavities
Inventors:
Karl M. Schmidt, Stuart Jenkins, Harry W. Edwards, George S. Cole
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Nov 30, 1995
Inventors
Karl M. Schmidt
Stuart Jenkins
Harry W. Edwards
George S. Cole
Assignee (at issue)
Energaire Corporation
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.