Granted Patent
Utility
US 4,652,102 · App. 06/799,263
Exposure correction device for camera
Inventors:
Hidehiro Ogawa, Akira Ezawa, Kei Ikeda
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Nov 18, 1985
Inventors
Hidehiro Ogawa
Akira Ezawa
Kei Ikeda
Assignee (at issue)
Nippon Kogaku K.K.
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.