Granted Patent
Utility
US 4,394,073 · App. 06/214,887
Compact wide angle lens
Inventor:
Koichi Wakamiya
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Dec 10, 1980
Inventor
Koichi Wakamiya
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.