Granted Patent
Utility
US 5,221,256 · App. 07/833,311
Multiple-lumen catheter
Inventor:
Sakharam D. Mahurkar
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Feb 10, 1992
Inventor
Sakharam D. Mahurkar
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.