Granted Patent
Utility
US 6,637,686 · App. 09/775,996
Refiner
Inventors:
Peter Antensteiner, Helmuth Gabl, Andreas Gorton-Hulgerth, Gerald Schadler
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Feb 2, 2001
Inventors
Peter Antensteiner
Helmuth Gabl
Andreas Gorton-Hulgerth
Gerald Schadler
Assignee (at issue)
ANDRITZ 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.