Granted Patent
Utility
US 5,548,990 · App. 08/424,233
Methods and systems for calibrating flow meters
Inventor:
Ronald Northedge
Patented Case
View Patent ↗
Granted: Aug 27, 1996
Filed: Apr 19, 1995
Inventor
Ronald Northedge
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.