Granted Patent
Utility
US 6,238,331 · App. 09/486,182
Centrifugal separator with separation funnel
Inventors:
Ian M Cox, Andrew Samways
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Feb 23, 2000
Inventors
Ian M Cox
Andrew Samways
Assignee (at issue)
Filterwerk Mann & Hummel GmbH
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.