Granted Patent
Utility
US 6,659,113 · App. 09/944,647
Grit washer and bearing assembly therefore
Inventor:
Stephen B. Wilcher
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Aug 31, 2001
Inventor
Stephen B. Wilcher
Assignee (at issue)
United States Filter Corporation
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.