Granted Patent
Utility
US 6,193,406 · App. 09/194,358
Method and apparatus for mixing pulp a suspension with a fluid medium with a freely rotatable mixing rotor
Inventors:
Karl Peltonen, Reijo Vesala
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Nov 25, 1998
Inventors
Karl Peltonen
Reijo Vesala
Assignee (at issue)
Andritz-Ahlstrom Oy
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.