Granted Patent
Utility
US 5,937,544 · App. 08/903,130
Athletic footwear sole construction enabling enhanced energy storage, retrieval and guidance
Inventor:
Brian Russell
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jul 30, 1997
Inventor
Brian Russell
Assignee (at issue)
Britek Footwear Development, 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.