Granted Patent
Utility
US 6,282,022 · App. 09/441,661
Real-image finder optical system
Inventor:
Tetsuya Abe
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Nov 16, 1999
Inventor
Tetsuya Abe
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.