Granted Patent
Utility
US 6,233,790 · App. 09/343,748
Outer strap for air filter cartridge
Inventor:
Charles Grant Carothers
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Jun 30, 1999
Inventor
Charles Grant Carothers
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.