Granted Patent
Utility
US 6,340,431 · App. 09/927,720
SPA chemistry monitor and treatment unit
Inventor:
Soudy Khan
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Aug 11, 2001
Inventor
Soudy Khan
Assignee (at issue)
Polaris Pool Systems 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.