Granted Patent
Utility
US 5,211,629 · App. 07/813,115
Safety syringe
Inventors:
William B. S. Pressly, Sr., Charles A. Vaughn, Sr.
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Dec 23, 1991
Inventors
William B. S. Pressly, Sr.
Charles A. Vaughn, Sr.
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.