Granted Patent
Utility
US 6,491,609 · App. 09/772,812
Exercise arm apparatus with pivotal linkage system
Inventor:
Randall T. Webber
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Jan 30, 2001
Inventor
Randall T. Webber
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.