Granted Patent
Utility
US 5,306,235 · App. 07/954,176
Failsafe iontophoresis drug delivery system
Inventor:
John L. Haynes, III
Patented Case
View Patent ↗
Granted: Apr 26, 1994
Filed: Sep 30, 1992
Inventor
John L. Haynes, III
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.