Granted Patent
Utility
US 4,515,438 · App. 06/363,918
Lens barrel
Inventor:
Mitsuo Ohnuki
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Mar 31, 1982
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.