Granted Patent
Utility
US 4,431,279 · App. 06/299,386
Eye periphery portion illuminating device in an ophthalmologic instrument
Inventor:
Kazuo Morohashi
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Sep 4, 1981
Inventor
Kazuo Morohashi
Assignee (at issue)
Nippon Kogaku K.K.
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.