Granted Patent
Utility
US 5,837,664 · App. 08/683,052
Aqueous shower rinsing composition and a method for keeping showers clean
Inventor:
Robert H. Black
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Jul 16, 1996
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.