Granted Patent
Utility
US 5,314,411 · App. 07/695,549
Catheterization system with universal retention device and method of use
Inventors:
Steven F. Bierman, David C. Howson
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: May 3, 1991
Inventors
Steven F. Bierman
David C. Howson
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.