Granted Patent
Utility
US 5,833,867 · App. 08/566,267
System and method for backwashing multiple filtration vessels
Inventor:
Jerry L. Hensley
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Dec 1, 1995
Inventor
Jerry L. Hensley
Assignee (at issue)
United States Filter Corporation
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.