Granted Patent
Utility
US 5,879,897 · App. 08/717,793
Methods and compositions for the diagnosis of extraesophageal gastric reflux
Inventor:
James Koufman
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Sep 23, 1996
Inventor
James Koufman
Assignee (at issue)
WAKE FOREST UNIVERSITY
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.