Granted Patent
Utility
US 4,778,893 · App. 07/000,540
Optical indicator 3,4-dihydro-2-quinolones
Inventors:
Robert T. Buckler, Robert P. Hatch
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Jan 5, 1987
Inventors
Robert T. Buckler
Robert P. Hatch
Assignee (at issue)
Miles 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.