Granted Patent
Utility
US 6,132,338 · App. 08/428,863
Resilient exercise board
Inventor:
Tessema Dosho Shifferaw
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Apr 25, 1995
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.