Granted Patent
Utility
US 4,324,467 · App. 06/216,664
Programed exposure control device
Inventor:
Kazuo Shiozawa
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Dec 15, 1980
Inventor
Kazuo Shiozawa
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.