Granted Patent
Utility
US 4,975,367 · App. 07/079,692
Catalytic test composition intended to produce a range of colors
Inventors:
James P. Albarella, Steven C. Charlton, James W. Reinsch, Mary E. Warchal
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Jul 30, 1987
Inventors
James P. Albarella
Steven C. Charlton
James W. Reinsch
Mary E. Warchal
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.