Granted Patent
Utility
US 5,236,424 · App. 07/894,080
Catheter with retractable cannula for delivering a plurality of chemicals
Inventor:
Mir Imran
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Jun 5, 1992
Inventor
Mir Imran
Assignee (at issue)
Cardiac Pathways 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.