Granted Patent
Utility
US 4,473,287 · App. 06/389,049
Focus detecting device for camera
Inventors:
Toru Fukuhara, Makoto Kimura
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Jun 16, 1982
Inventors
Toru Fukuhara
Makoto Kimura
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.