Granted Patent
Utility
US 6,214,214 · App. 09/281,989
Water treatment system with purge valve responsive to fluid signals
Inventors:
Christopher L. Hansen, Stuart Park, Peter Halemba
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Mar 29, 1999
Inventors
Christopher L. Hansen
Stuart Park
Peter Halemba
Assignee (at issue)
KINETICO INCORPORATED
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.