Granted Patent
Utility
US 4,898,576 · App. 07/236,341
Intravenous fluid flow monitor
Inventor:
James H. Philip
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Aug 22, 1988
Inventor
James H. Philip
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.