Granted Patent
Utility
US 6,236,523 · App. 09/538,719
Floating lens barrel, lens barrel, and a common lens barrel system
Inventors:
Makoto Iikawa, Takuji Hamasaki
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Mar 30, 2000
Inventors
Makoto Iikawa
Takuji Hamasaki
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.