Granted Patent
Utility
US 4,266,865 · App. 06/055,557
Diaphragm correcting means of an objective lens mounted on a single lens reflex camera of the TTL full aperture exposure measurement type
Inventor:
Toru Fukuhara
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Jul 9, 1979
Inventor
Toru Fukuhara
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.