Granted Patent
Utility
US 6,171,494 · App. 09/024,688
Hydraulic vessel system having a downwardly feeding separator
Inventors:
Vidar Snekkenes, Johan Engstrom, Sven-Erik Ohlsson, Per Johan Anders Nyström, Soren Soderqvist, Bjorn Karlsson
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Feb 17, 1998
Inventors
Vidar Snekkenes
Johan Engstrom
Sven-Erik Ohlsson
Per Johan Anders Nyström
Soren Soderqvist
Bjorn Karlsson
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.