Granted Patent
Utility
US 5,423,730 · App. 07/866,826
Physical fitness training apparatus and method of using
Inventor:
David Hirsch
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Apr 10, 1992
Inventor
David Hirsch
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.