Granted Patent
Utility
US 6,171,870 · App. 09/130,164
Analytical test device and method for use in medical diagnoses
Inventor:
Helmut Freitag
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Aug 6, 1998
Inventor
Helmut Freitag
Assignee (at issue)
Spectral Diagnostics, Inc
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.