Granted Patent
Utility
US 4,786,169 · App. 06/763,919
Optical analytical instrument for testing the transmission and reflection of a sample
Inventors:
Philip R. Brierley, Doug Pfrang
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Aug 8, 1985
Inventors
Philip R. Brierley
Doug Pfrang
Assignee (at issue)
Nicolet Instrument Corporation
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.