Granted Patent
Utility
US 5,224,938 · App. 07/853,569
Valved catheter
Inventor:
Paul V. Fenton, Jr.
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Mar 18, 1992
Inventor
Paul V. Fenton, Jr.
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.