Granted Patent
Utility
US 6,706,196 · App. 10/372,731
Method and apparatus for preventing scale deposits and removing contaminants from fluid columns
Inventor:
Herbert W. Holland
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Feb 23, 2002
Inventor
Herbert W. Holland
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.