Granted Patent
Utility
US 5,628,309 · App. 08/591,308
Meter for electrically measuring and recording injection syringe doses
Inventor:
Stephen J. Brown
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Jan 25, 1996
Inventor
Stephen J. Brown
Assignee (at issue)
Raya Systems, Inc.
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.