Granted Patent
Utility
US 6,598,241 · App. 10/078,630
Composite water closet flanges and methods for forming the same
Inventor:
Robert M. Williams
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Feb 19, 2002
Inventor
Robert M. Williams
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.