Granted Patent
Utility
US 6,729,442 · App. 10/180,644
Wheel hub magnetic filter for lubricating fluids
Inventors:
Michael B. Merkler, Vincent O. Valenzuela, Daniel A. Grohnke, Richard L. Overman
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jun 26, 2002
Inventors
Michael B. Merkler
Vincent O. Valenzuela
Daniel A. Grohnke
Richard L. Overman
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.