Granted Patent
Utility
US 6,134,054 · App. 09/222,304
Monochromatic image forming optical system and monochromatic filtering optical system
Inventor:
Tetsuya Abe
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Dec 28, 1998
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.