Granted Patent
Utility
US 5,530,236 · App. 08/272,050
Focus detecting apparatus with particular arrangement of light receiving portions
Inventor:
Takayuki Sensui
Patented Case
View Patent ↗
Granted: Jun 25, 1996
Filed: Jul 8, 1994
Inventor
Takayuki Sensui
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.