Granted Patent
Utility
US 6,652,491 · App. 09/848,745
Steerable stylet
Inventors:
Gregory L. Walker, John A. Steen
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: May 3, 2001
Inventors
Gregory L. Walker
John A. Steen
Assignee (at issue)
Catheter Research, 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.