Granted Patent
Utility
US 5,319,196 · App. 07/986,321
Optical rotation sensor
Inventor:
Ronald D. Cleven
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Dec 7, 1992
Inventor
Ronald D. Cleven
Assignee (at issue)
Magnavox Electronic Systems Company
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.