Granted Patent
Utility
US 5,217,487 · App. 07/736,009
Back therapy system
Inventors:
Timothy S. Engel, Dennis Colonello, Weston L. Cutter, Stephen S. Peterson
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Jul 25, 1991
Inventors
Timothy S. Engel
Dennis Colonello
Weston L. Cutter
Stephen S. Peterson
Assignee (at issue)
NordicTrack, 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.