Granted Patent
Utility
US 6,196,471 · App. 09/451,335
Apparatus for creating a multi-colored illuminated waterfall or water fountain
Inventor:
Douglas Ruthenberg
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Nov 30, 1999
Inventor
Douglas Ruthenberg
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.