Granted Patent
Utility
US 5,135,474 · App. 07/562,314
Hepatic bypass catheter
Inventors:
Kenneth Swan, Charles J. Heyler, III
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Aug 3, 1990
Inventors
Kenneth Swan
Charles J. Heyler, III
Assignee (at issue)
University of Medicine and Dentistry of New Jersey
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.