Granted Patent
Utility
US 4,932,774 · App. 07/159,948
Illuminating system of ophthalmological instrument
Inventors:
Kazutoshi Takagi, Nobuaki Kitajima, Kazuo Nunokawa
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Feb 24, 1988
Inventors
Kazutoshi Takagi
Nobuaki Kitajima
Kazuo Nunokawa
Assignee (at issue)
Tokyo Kogaku Kikai Kabushiki Kaisha
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.