Granted Patent
Utility
US 4,666,259 · App. 06/705,721
Catadioptric telephoto lens
Inventor:
Yutaka Iizuka
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Feb 26, 1985
Inventor
Yutaka Iizuka
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.