Granted Patent
Utility
US 4,693,577 · App. 06/831,633
Focusing screen mounting device in a camera
Inventors:
Nobuaki Sasagaki, Hidekatsu Fujii
Patented Case
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Granted: Sep 15, 1987
Filed: Feb 21, 1986
Inventors
Nobuaki Sasagaki
Hidekatsu Fujii
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.