Granted Patent
Utility
US 4,354,754 · App. 06/270,622
Indicator device within the viewfinder of a camera
Inventors:
Yosuke Takahashi, Toshikatsu Kasui, Nobuaki Sasagaki
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Jun 4, 1981
Inventors
Yosuke Takahashi
Toshikatsu Kasui
Nobuaki Sasagaki
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.