Granted Patent
Utility
US 4,829,171 · App. 07/090,931
Automatic camera focusing apparatus with movable position sensitive detector
Inventor:
Nobuo Katsumura
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Aug 31, 1987
Inventor
Nobuo Katsumura
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.