Granted Patent
Utility
US 5,282,089 · App. 07/933,210
Zoom lens system
Inventor:
Tetsuya Abe
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Aug 21, 1992
Inventor
Tetsuya Abe
Assignee (at issue)
Asahi Kogaku Kogyo 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.