Granted Patent
Utility
US 5,169,360 · App. 07/598,099
Aerobic step device
Inventor:
William J. Saunders
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Oct 16, 1990
Inventor
William J. Saunders
Assignee (at issue)
Sports Step, 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.