Granted Patent
Utility
US 4,500,089 · App. 06/459,508
Weight lifting lower back exercising machine
Inventor:
Arthur A. Jones
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Jan 20, 1983
Inventor
Arthur A. Jones
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.