Granted Patent
Utility
US 5,246,418 · App. 07/808,754
Iontophresis system having features for reducing skin irritation
Inventors:
John L. Haynes, III, Burton H. Sage, Jr.
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Dec 17, 1991
Inventors
John L. Haynes, III
Burton H. Sage, Jr.
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.