Granted Patent
Utility
US 6,158,389 · App. 09/180,685
Sprint training exercise system and method
Inventor:
Michael A. Wehrell
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Nov 13, 1998
Inventor
Michael A. Wehrell
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.