Granted Patent
Utility
US 6,413,236 · App. 09/598,074
Automatically retractable needle safety syringe
Inventor:
Lewis R. Van Dyke
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Jun 20, 2000
Inventor
Lewis R. Van Dyke
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.