Granted Patent
Utility
US 4,358,191 · App. 06/293,206
Exposure rate controlling mechanism for camera
Inventor:
Yasuo Ishiguro
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Aug 10, 1981
Inventor
Yasuo Ishiguro
Assignees (at issue)
Konishiroku Photo Industry Co., Ltd.
Copal Company Limited
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.