Granted Patent
Utility
US 4,318,410 · App. 06/176,009
Double lumen dilatation catheter
Inventor:
Albert K. Chin
Patented Case
View Patent ↗
Granted: Mar 9, 1982
Filed: Aug 7, 1980
Inventor
Albert K. Chin
Assignee (at issue)
Thomas J. Fogarty
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.