Granted Patent
Utility
US 4,589,656 · App. 06/668,984
Aerobic exercise device for increased user comfort
Inventor:
Dan D. Baldwin
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Nov 7, 1984
Inventor
Dan D. Baldwin
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.