Granted Patent
Utility
US 6,450,487 · App. 09/774,813
Cylindrical dynamic damper exhibiting high bonding strength between mass member and elastic support members
Inventor:
Naohito Kuwayama
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Jan 31, 2001
Inventor
Naohito Kuwayama
Assignee (at issue)
TOKAI RUBBER INDUSTRIES, 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.