Granted Patent
Utility
US 5,833,663 · App. 08/789,084
Naso-gastric tube retainer
Inventors:
Steven F. Bierman, Gregory Weiss
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Jan 27, 1997
Inventors
Steven F. Bierman
Gregory Weiss
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.