Granted Patent
Utility
US 6,603,522 · App. 09/831,329
Liquid crystal shutter
Inventor:
Yasushi Kaneko
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: May 8, 2001
Inventor
Yasushi Kaneko
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.