Granted Patent
Utility
US 5,580,342 · App. 08/440,219
Support device for shoulder rotation exercises
Inventor:
Ronald B. Johnson
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: May 12, 1995
Inventor
Ronald B. Johnson
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.