Granted Patent
Utility
US 5,591,389 · App. 08/447,894
Method for making disposable tubular device
Inventor:
Bernard S. Esrock
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: May 23, 1995
Inventor
Bernard S. Esrock
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.