Granted Patent
Utility
US 6,726,735 · App. 09/430,063
Unitary filter cartridge
Inventors:
Reinout G. Oussoren, Jack T. Clements
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Oct 29, 1999
Inventors
Reinout G. Oussoren
Jack T. Clements
Assignee (at issue)
BHA Group, 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.