Granted Patent
Utility
US 5,131,403 · App. 07/710,420
Method for obtaining blood using iontophoresis
Inventor:
John L. Haynes, III
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Jun 5, 1991
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.