Granted Patent
Utility
US 4,657,490 · App. 06/717,131
Infusion pump with disposable cassette
Inventor:
Martyn Stuart Abbott
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Mar 27, 1985
Inventor
Martyn Stuart Abbott
Assignee (at issue)
Quest Medical, 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.