Granted Patent
Utility
US 4,464,176 · App. 06/385,334
Blood vessel catheter for medicine delivery and method of manufacture
Inventor:
Bandula Wijayarathna
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Jun 4, 1982
Inventor
Bandula Wijayarathna
Assignee (at issue)
MALLINCKRODT LLC
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.