Granted Patent
Utility
US 6,306,259 · App. 09/488,699
Device for the treatment of a fibrous suspension
Inventors:
Axel Lamas, Stefan Hansson, Bo Clarstrom, Jesper Karrhammar, Goran Brottgardh
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Jan 20, 2000
Inventors
Axel Lamas
Stefan Hansson
Bo Clarstrom
Jesper Karrhammar
Goran Brottgardh
Assignee (at issue)
Kvaerner Pulping AB
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.