Granted Patent
Utility
US 4,672,456 · App. 06/702,466
Automatic focusing device of video camera
Inventors:
Yoshio Murai, Kazuo Shiozawa, Masaki Shimada
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Feb 19, 1985
Inventors
Yoshio Murai
Kazuo Shiozawa
Masaki Shimada
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
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.