Granted Patent
Utility
US 6,539,097 · App. 09/833,315
Multi-functional vibration actuator
Inventor:
Nobuyasu Sakai
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Apr 12, 2001
Inventor
Nobuyasu Sakai
Assignee (at issue)
TOKIN CORPORATION
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.