Granted Patent
Utility
US 4,300,552 · App. 06/137,557
Apparatus for controlling the flow of intravenous fluid to a patient
Inventor:
Raymond E. Cannon
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Apr 4, 1980
Inventor
Raymond E. Cannon
Assignee (at issue)
Imed 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.