Granted Patent
Utility
US 6,682,464 · App. 09/767,344
Adjustable dumbbell/barbell
Inventor:
Tessema Dosho Shifferaw
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Jan 22, 2001
Inventor
Tessema Dosho Shifferaw
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.