Granted Patent
Utility
US 6,238,437 · App. 09/149,949
Able-bodied artificial foot phosthesis testing apparatus
Inventors:
Christopher Lyle Johnson, Eric Robinson
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Sep 9, 1998
Inventors
Christopher Lyle Johnson
Eric Robinson
Assignee (at issue)
College Park Industries, Inc.
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.