Granted Patent
Utility
US 5,547,439 · App. 08/216,007
Exercise system
Inventors:
R. Lee Rawls, Steven Jay Wierlo, Cathy L. Wade
Patented Case
View Patent ↗
Granted: Aug 20, 1996
Filed: Mar 22, 1994
Inventors
R. Lee Rawls
Steven Jay Wierlo
Cathy L. Wade
Assignee (at issue)
StairMaster Sports/Medical Products, 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.