Granted Patent
Utility
US 4,555,940 · App. 06/438,356
Method and apparatus for measuring fluid flow rates and volumes through fluid flow paths
Inventor:
Herman L. Renger
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: Nov 1, 1982
Inventor
Herman L. Renger
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.