Granted Patent
Utility
US 4,994,069 · App. 07/265,908
Vaso-occlusion coil and method
Inventors:
Mark A. Ritchart, Mike Mariant, Ivan Sepetka, Erik T. Engelson
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Nov 2, 1988
Inventors
Mark A. Ritchart
Mike Mariant
Ivan Sepetka
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.