Granted Patent
Utility
US 5,820,568 · App. 08/732,511
Apparatus and method for aiding in the positioning of a catheter
Inventor:
Nathaniel Parker Willis
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: Oct 15, 1996
Inventor
Nathaniel Parker Willis
Assignee (at issue)
Cardiac Pathways Corporation
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.