Granted Patent
Utility
US 6,255,760 · App. 09/579,396
Driving apparatus of piezoelectric vibrator
Inventors:
Kazuo Hasegawa, Daisuke Takai
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: May 25, 2000
Inventors
Kazuo Hasegawa
Daisuke Takai
Assignee (at issue)
ALPS ELECTRIC 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.