Granted Patent
Utility
US 4,856,340 · App. 07/128,122
Pressure diaphragm for a medication infusion system
Inventor:
Michi E. Garrison
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Dec 1, 1987
Inventor
Michi E. Garrison
Assignee (at issue)
MiniMed Technologies, Ltd.
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.