Granted Patent
Utility
US 4,746,493 · App. 07/907,245
Waveguide reaction cell
Inventor:
James A. O'Neill
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Sep 15, 1986
Inventor
James A. O'Neill
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.