Granted Patent
Utility
US 6,821,403 · App. 10/030,511
Method and device for cleaning and disinfecting treatment of water
Inventor:
Anders Lundquist
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: May 6, 2002
Inventor
Anders Lundquist
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.