Granted Patent
Utility
US 5,478,747 · App. 08/016,947
Immunological switch for controlling the reporting of test results
Inventor:
Thomas P. Hartz, Jr.
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Feb 22, 1993
Inventor
Thomas P. Hartz, Jr.
Assignee (at issue)
E.I. DU PONT DE NEMOURS 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.