Granted Patent
Utility
US 6,256,933 · App. 09/444,322
Roof valley water distributor
Inventor:
Richard L. Kuhns
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Nov 19, 1999
Inventor
Richard L. Kuhns
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.