Granted Patent
Utility
US 4,494,853 · App. 06/286,194
Photometric method for cameras
Inventor:
Koji Watanabe
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Jul 23, 1981
Inventor
Koji Watanabe
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.