Granted Patent
Utility
US 4,842,271 · App. 07/198,132
Leg extension exercise machine with leg length and exercise motion range adjustment apparatus
Inventor:
John Vinciguerra
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: May 24, 1988
Inventor
John Vinciguerra
Assignee (at issue)
Nautilus Sports Medical Industries, 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.