Granted Patent
Utility
US 4,764,676 · App. 06/921,212
Apparatus for spectral analysis of chromatographic fractions
Inventor:
Walter M. Doyle
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Oct 20, 1986
Inventor
Walter M. Doyle
Assignee (at issue)
Laser Precision Corp.
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.