Granted Patent
Utility
US 4,477,190 · App. 06/284,841
Multichannel spectrophotometer
Inventors:
Max D. Liston, David G. Dickinson, William A. Stark
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Jul 20, 1981
Inventors
Max D. Liston
David G. Dickinson
William A. Stark
Assignee (at issue)
American Hospital Supply 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.