Granted Patent
Utility
US 4,668,069 · App. 06/860,783
Exposure control device in a camera
Inventor:
Hiroshi Hasegawa
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: May 8, 1986
Inventor
Hiroshi Hasegawa
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.