Granted Patent
Utility
US 6,718,270 · App. 10/244,746
Vibration testing device and vibration response evaluating method
Inventors:
Toshihiko Horiuchi, Takao Konno
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Sep 17, 2002
Inventors
Toshihiko Horiuchi
Takao Konno
Assignee (at issue)
HITACHI, 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.