Granted Patent
Utility
US 5,433,711 · App. 08/283,324
Syringe with cannula-protecting sheath and sealing center rod
Inventors:
Stephen M. Balaban, Jonathan P. Smith
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Aug 1, 1994
Inventors
Stephen M. Balaban
Jonathan P. Smith
Assignee (at issue)
Monsanto Company
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.