Granted Patent
Utility
US 4,587,416 · App. 06/508,166
Focus detecting apparatus for microscope or camera
Inventors:
Koichi Kudo, Hidehiro Ogawa, Atsushi Kawahara
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Jun 27, 1983
Inventors
Koichi Kudo
Hidehiro Ogawa
Atsushi Kawahara
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.