Granted Patent
Utility
US 6,719,807 · App. 09/839,161
Prosthetic foot
Inventor:
Graham Harris
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Apr 20, 2001
Inventor
Graham Harris
Assignee (at issue)
Chas. A. Blatchford & Sons Limited
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.