Granted Patent
Utility
US 5,443,449 · App. 08/080,972
Cholangiography catheter
Inventor:
Terrance J. Buelna
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Jun 22, 1993
Inventor
Terrance J. Buelna
Assignee (at issue)
Applied Medical Resources 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.