Granted Patent
Utility
US 5,580,335 · App. 08/357,463
Exercise device
Inventor:
Christopher John Smith
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Dec 16, 1994
Inventor
Christopher John Smith
Assignee (at issue)
Prism Enterprises LP
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.