Granted Patent
Utility
US 6,422,979 · App. 09/300,546
Weight selection methods for adjusting resistance to exercise
Inventor:
Mark A. Krull
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Apr 27, 1999
Inventor
Mark A. Krull
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.