Granted Patent
Utility
US 5,112,301 · App. 07/717,618
Bidirectional check valve catheter
Inventors:
Paul V. Fenton, Jr., Thomas M. Young, William J. Gorman
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Jun 19, 1991
Inventors
Paul V. Fenton, Jr.
Thomas M. Young
William J. Gorman
Assignee (at issue)
Strato Medical 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.