Granted Patent
Utility
US 5,380,258 · App. 07/966,710
Exercise apparatus
Inventor:
Peter Hawley
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Oct 26, 1992
Inventor
Peter Hawley
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.