Granted Patent
Utility
US 6,009,672 · App. 08/925,690
Roof valley water collector
Inventor:
Richard L. Kuhns
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Sep 9, 1997
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.