Granted Patent
Utility
US 4,908,645 · App. 07/305,162
Automatic focus adjusting device
Inventors:
Masaki Higashihara, Yasuo Suda, Ichiro Ohnuki, Akira Akashi, Terutake Kadohara
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Feb 2, 1989
Inventors
Masaki Higashihara
Yasuo Suda
Ichiro Ohnuki
Akira Akashi
Terutake Kadohara
Assignee (at issue)
CANON 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.