Granted Patent
Utility
US 5,191,727 · App. 07/743,483
Propulsion plate hydrodynamic footwear
Inventors:
Daniel T. Barry, Raymond M. Fredericksen, Robert W. Soutas-Little, Ruk Peterson
Patented Case
View Patent ↗
Granted: Mar 9, 1993
Filed: Aug 8, 1991
Inventors
Daniel T. Barry
Raymond M. Fredericksen
Robert W. Soutas-Little
Ruk Peterson
Assignee (at issue)
Wolverine World Wide, 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.