Granted Patent
Utility
US 6,226,547 · App. 09/192,217
Catheter tracking system
Inventors:
Peter Lockhart, James Rex
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Nov 16, 1998
Inventors
Peter Lockhart
James Rex
Assignee (at issue)
Roke Manor Research 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.