Granted Patent
Utility
US 6,416,622 · App. 09/772,395
Hybrid multistage forward cleaner system with flotation cell
Inventor:
Robert L. de Jong
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Jan 30, 2001
Inventor
Robert L. de Jong
Assignee (at issue)
Georgia-Pacific LLC
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.