Granted Patent
Utility
US 5,397,302 · App. 08/060,434
Method of using a dual lumen biliary catheter
Inventors:
George W. Weaver, Harold Jacob, David F. Leighton
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: May 11, 1993
Inventors
George W. Weaver
Harold Jacob
David F. Leighton
Assignee (at issue)
Arrow Precision Products, 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.