Granted Patent
Utility
US 4,863,434 · App. 07/204,560
Automatic needle sheath for disposable syringe
Inventor:
William B. Bayless
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Jun 9, 1988
Inventor
William B. Bayless
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.