Granted Patent
Utility
US 6,521,822 · App. 09/959,096
Electronic unit
Inventors:
Yukio Ito, Junsuke Kashikie, Teruhiko Fujii
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Oct 18, 2001
Inventors
Yukio Ito
Junsuke Kashikie
Teruhiko Fujii
Assignee (at issue)
CITIZEN WATCH 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.