Granted Patent
Utility
US 5,833,669 · App. 08/491,041
Medicine injection syringe constructions
Inventor:
Ronald E. Wyrick
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Jun 16, 1995
Inventor
Ronald E. Wyrick
Assignee (at issue)
Washington Biotech Corporation
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.