Granted Patent
Utility
US 6,675,759 · App. 10/074,266
Crankshaft damper
Inventors:
David H. Johnson, Edson Lopes
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Feb 12, 2002
Inventors
David H. Johnson
Edson Lopes
Assignee (at issue)
Freudenberg-NOK General Partnership
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.