Granted Patent
Utility
US 4,720,182 · App. 06/793,266
Zoom lens capable of effecting a macro operation
Inventor:
Hitoshi Imanari
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Oct 31, 1985
Inventor
Hitoshi Imanari
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.