Granted Patent
Utility
US 4,765,722 · App. 06/855,731
Zoom lens
Inventor:
Yasuhiro Aono
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Apr 25, 1986
Inventor
Yasuhiro Aono
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.