Granted Patent
Utility
US 6,083,199 · App. 09/158,633
Retractable syringe
Inventors:
Craig Stephen Thorley, Joseph Hermes Kaal
Patented Case
View Patent ↗
Granted: Jul 4, 2000
Filed: Sep 22, 1998
Inventors
Craig Stephen Thorley
Joseph Hermes Kaal
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.