Granted Patent
Utility
US 6,579,450 · App. 09/975,222
Non-metallic tooth segment and bar rack design
Inventor:
Stephen B. Wilcher
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Oct 11, 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.