Granted Patent
Utility
US 5,209,641 · App. 07/707,053
Apparatus for fluidizing, degassing and pumping a suspension of fibrous cellulose material
Inventors:
Ronny Hoglund, Ulf Jansson
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: May 29, 1991
Inventors
Ronny Hoglund
Ulf Jansson
Assignee (at issue)
Kamyr 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.