Granted Patent
Utility
US 4,475,801 · App. 06/516,727
Flashlight photography preparing device of a camera
Inventors:
Yoshiaki Otsubo, Hiroshi Wakabayashi, Tadashi Otani
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Jul 25, 1983
Inventors
Yoshiaki Otsubo
Hiroshi Wakabayashi
Tadashi Otani
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.