Granted Patent
Utility
US 6,148,969 · App. 09/159,722
Frequency dependant damper
Inventor:
Luc Lemmens
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Sep 24, 1998
Inventor
Luc Lemmens
Assignee (at issue)
Tenneco Automotive Inc.
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.