Granted Patent
Utility
US 3,969,019 · App. 05/565,619
Curvature measuring optical system in ophthalmometer
Inventor:
Masao Nohda
Patented Case
View Patent ↗
Granted: Jul 13, 1976
Filed: Apr 7, 1975
Inventor
Masao Nohda
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.