Granted Patent
Utility
US 5,664,239 · App. 08/466,889
Automatic focusing apparatus
Inventor:
Masahiro Nakata
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: Jun 6, 1995
Inventor
Masahiro Nakata
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.