Granted Patent
Utility
US 6,290,856 · App. 09/507,218
Reverse osmosis system with biological contamination prevention
Inventor:
Timothy Allen Beall
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Feb 18, 2000
Inventor
Timothy Allen Beall
Assignee (at issue)
World Wide Water, Inc.
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.