Granted Patent
Utility
US 4,472,116 · App. 06/353,042
Infusion pumping apparatus
Inventor:
Jan F. Wenstrup
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Mar 1, 1982
Inventor
Jan F. Wenstrup
Assignee (at issue)
Air-Shields, 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.