Granted Patent
Utility
US 6,817,454 · App. 10/316,040
Damping force control type hydraulic shock absorber
Inventors:
Takashi Nezu, Yohei Katayama
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Dec 11, 2002
Inventors
Takashi Nezu
Yohei Katayama
Assignee (at issue)
Tokico, 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.