Granted Patent
Utility
US 4,740,686 · App. 06/905,716
Optical sensor circuitry
Inventor:
Heinz Nusser
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Sep 9, 1986
Inventor
Heinz Nusser
Assignee (at issue)
PerkinElmer, 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.