Granted Patent
Utility
US 4,979,737 · App. 07/376,256
Apparatus for exercising lower leg muscles
Inventor:
Ronald W. Kock
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Jul 6, 1989
Inventor
Ronald W. Kock
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.