Granted Patent
Utility
US 6,389,238 · App. 09/534,285
Lens barrel
Inventor:
Hiroaki Suzuki
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Mar 23, 2000
Inventor
Hiroaki Suzuki
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.