Granted Patent
Utility
US 4,473,286 · App. 06/437,012
Automatic focusing device of a camera
Inventors:
Sakuji Watanabe, Akira Ogasawara, Nobuhiko Terui, Ken Utagawa, Kunihisa Hoshino
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Oct 27, 1982
Inventors
Sakuji Watanabe
Akira Ogasawara
Nobuhiko Terui
Ken Utagawa
Kunihisa Hoshino
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.