Granted Patent
Utility
US 6,649,045 · App. 10/153,299
Filter cartridge assembly for water treatment device
Inventors:
John Tanner, David J. Emmons, Erik G. Orwoll
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: May 21, 2002
Inventors
John Tanner
David J. Emmons
Erik G. Orwoll
Assignee (at issue)
PUR Water Purification Products, 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.