Granted Patent
Utility
US 4,947,845 · App. 07/297,506
Method of maximizing catheter longevity in an implantable medication infusion system
Inventor:
Mark W. Davis
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Jan 13, 1989
Inventor
Mark W. Davis
Assignee (at issue)
Pacesetter Infusion, Ltd.
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.