Granted Patent
Utility
US 4,486,084 · App. 06/422,951
Light shield blades for light control device and light control device utilizing said light shield blades
Inventors:
Akihiko Sato, Yoshiyuki Nakano, Etsuo Tanaka
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Sep 24, 1982
Inventors
Akihiko Sato
Yoshiyuki Nakano
Etsuo Tanaka
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.