Granted Patent
Utility
US 4,721,972 · App. 06/865,386
Camera having a photo-taking lens barrel movable in the direction of the optic axis
Inventor:
Hiroshi Wakabayashi
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: May 21, 1986
Inventor
Hiroshi Wakabayashi
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.