Granted Patent
Utility
US 4,380,375 · App. 06/153,788
Wide angle zoom lens of two-group construction
Inventor:
Satoshi Mogami
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: May 27, 1980
Inventor
Satoshi Mogami
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.