Granted Patent
Utility
US 5,738,280 · App. 08/699,265
Centerfed device for creating decorative waterfalls
Inventor:
Douglas Ruthenberg
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Aug 19, 1996
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.