Granted Patent
Utility
US 6,205,857 · App. 09/256,312
Angular velocity sensing device
Inventor:
Fumio Nakajima
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Feb 24, 1999
Inventor
Fumio Nakajima
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.