Granted Patent
Utility
US 4,534,625 · App. 06/586,652
Lens tube for a high vari-focal ratio zoom lens
Inventor:
Mitsuo Ohnuki
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Mar 8, 1984
Inventor
Mitsuo Ohnuki
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
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.