Granted Patent
Utility
US 4,739,768 · App. 06/869,597
Catheter for guide-wire tracking
Inventor:
Erik T. Engelson
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Jun 2, 1986
Inventor
Erik T. Engelson
Assignee (at issue)
Target Therapeutics, 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.