Granted Patent
Utility
US 4,674,495 · App. 06/666,322
Catheter with insufflation lumen
Inventor:
Douglas Paul Orr
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Oct 31, 1984
Inventor
Douglas Paul Orr
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.