Granted Patent
Utility
US 6,314,246 · App. 09/475,659
Viewfinder optical system of a single-lens reflex camera
Inventors:
Hiroyasu Ozaki, Takayuki Ito
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Dec 30, 1999
Inventors
Hiroyasu Ozaki
Takayuki Ito
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.