Granted Patent
Utility
US 5,192,273 · App. 07/518,964
Catheterization system
Inventor:
Steven F. Bierman
Patented Case
View Patent ↗
Granted: Mar 9, 1993
Filed: May 4, 1990
Inventor
Steven F. Bierman
Assignee (at issue)
Steven F. Bierman, M.D.
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.