Granted Patent
Utility
US 5,871,125 · App. 08/697,692
Chemically driven liquid delivery pumping device
Inventor:
Joseph Gross
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Sep 5, 1996
Inventor
Joseph Gross
Assignee (at issue)
Elan Medical Technologies
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.