Granted Patent
Utility
US 4,396,271 · App. 06/283,813
Camera diaphragm control method
Inventor:
Fumiaki Hiraike
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Jul 16, 1981
Inventor
Fumiaki Hiraike
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.