Granted Patent
Utility
US 5,587,022 · App. 08/439,382
Method of rinsing showers
Inventor:
Robert H. Black
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: May 11, 1995
Inventor
Robert H. Black
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.