Granted Patent
Utility
US 5,249,744 · App. 07/924,203
Apparatus for creating waterfall for swimming pools
Inventor:
Douglas Ruthenberg
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Aug 3, 1992
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.